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Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,114
20
24,228
Tags: brute force, dfs and similar, math Correct Solution: ``` a,b=[int(i) for i in input().split()] res=[b] n=b while n>a: if n%2==0: n=n//2 res.insert(0,n) elif n%10==1: n=(n-1)//10 res.insert(0,n) else: print('NO') break else: if n==a: print('YE...
output
1
12,114
20
24,229
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,115
20
24,230
Tags: brute force, dfs and similar, math Correct Solution: ``` import math a = [] def dfs( pos, need ): x = a[pos] # print( x ) if x > need: return if x == need: print( "YES" ) print( pos + 1 ) print( *a ) # for i in a: # print( i ) exit( 0 ) a.append( x * 2 ) dfs( pos + 1, need ) a.pop() a.app...
output
1
12,115
20
24,231
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,116
20
24,232
Tags: brute force, dfs and similar, math Correct Solution: ``` a,b=input().split(' ') a=int(a) b=int(b) c=[] d=0 flag=0 c.append(b) while True: if (b-1)%10==0: b=(b-1)/10 d+=1 flag=1 c.append(b) elif b%2==0: b=b/2 flag=1 c.append(b) ...
output
1
12,116
20
24,233
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,117
20
24,234
Tags: brute force, dfs and similar, math Correct Solution: ``` a, b = map(int, input().split()) A = [b] while b > a: if b % 2 == 0: b //= 2 elif b % 10 == 1: b //= 10 else: break A.append(b) if A[-1] == a: print('YES') print(len(A)) print(*A[::-1]) else: print('NO...
output
1
12,117
20
24,235
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,118
20
24,236
Tags: brute force, dfs and similar, math Correct Solution: ``` f, n = map(int, input().split()) flag = True lst = [n] k = '' while n > f: if n % 10 == 1: k = str(n) n = int(k[:len(k)-1]) if n < f: flag = False break elif n % 2 == 0: n //= 2 if n <...
output
1
12,118
20
24,237
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,119
20
24,238
Tags: brute force, dfs and similar, math Correct Solution: ``` num_possuido, num_desejado = map(int, input().split()) aux = [] aux.append(num_desejado) while(num_desejado > num_possuido): if (num_desejado % 10) == 1: num_desejado = num_desejado // 10 aux.append(num_desejado) elif (num_desejado % 2 == 0): ...
output
1
12,119
20
24,239
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,120
20
24,240
Tags: brute force, dfs and similar, math Correct Solution: ``` n = [] def a_to_b(a, b): if b % 2 == 0: b = b / 2 if b >= a: n.insert(0, int(b)) a_to_b(a, b) elif b % 10 == 1: b = b // 10 if b >= a: n.insert(0, int(b)) a_to_b(a, b...
output
1
12,120
20
24,241
Provide tags and a correct Python 3 solution for this coding contest problem. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); * append the digit 1 to the right of current...
instruction
0
12,121
20
24,242
Tags: brute force, dfs and similar, math Correct Solution: ``` a,b=map(int,input("").split()) oplst=[] oplst.append(b) for i in range(b): if(b%10==1): b=b//10 oplst.append(b) if(b==a): print("YES") print(len(oplst)) oplst.reverse() print(*oplst...
output
1
12,121
20
24,243
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,122
20
24,244
Yes
output
1
12,122
20
24,245
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,123
20
24,246
Yes
output
1
12,123
20
24,247
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,124
20
24,248
Yes
output
1
12,124
20
24,249
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,125
20
24,250
Yes
output
1
12,125
20
24,251
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,126
20
24,252
No
output
1
12,126
20
24,253
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,127
20
24,254
No
output
1
12,127
20
24,255
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,128
20
24,256
No
output
1
12,128
20
24,257
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: * multiply the current number by 2 (that is, replace the number x by 2·x); ...
instruction
0
12,129
20
24,258
No
output
1
12,129
20
24,259
Provide tags and a correct Python 3 solution for this coding contest problem. Mahmoud and Ehab are on the third stage of their adventures now. As you know, Dr. Evil likes sets. This time he won't show them any set from his large collection, but will ask them to create a new set to replenish his beautiful collection of...
instruction
0
12,217
20
24,434
Tags: constructive algorithms Correct Solution: ``` def readints(): return [int(s) for s in input().strip().split()] def to_s(int_objs): return [str(obj) for obj in int_objs] class Solver: def main(self): n, x = readints() if n == 1: print('Yes\n{}'.format(x)) elif x ...
output
1
12,217
20
24,435
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,473
20
24,946
Tags: data structures, implementation, math Correct Solution: ``` md=998244353 n,m=map(int,input().split()) a=input() b=input() aa=[] bb=[] for i in a: aa.append(int(i)) for i in b: bb.append(int(i)) for i in range (1,len(bb)): bb[i]+=bb[i-1] aa.reverse() bb.reverse() tp=[1] for i in range (1,len(aa))...
output
1
12,473
20
24,947
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,474
20
24,948
Tags: data structures, implementation, math Correct Solution: ``` import math N = 2e5 + 10 PI = math.acos(-1.0); EXP = 1E-8; INF = 0x3f3f3f3f; MOD = 998244353; def add(a, b): a += b if (a < 0): a += MOD if (a >= MOD): a -= MOD return a n, m = map(int, input().split()) s = input() t = i...
output
1
12,474
20
24,949
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,475
20
24,950
Tags: data structures, implementation, math Correct Solution: ``` n,m = map(int,input().split()) a = input()[::-1] b = input()[::-1] c = 0 f = b.count('1') wer = 1 for i in range(min(m,n)): if a[i] == '1': c += f * wer c %= 998244353 if b[i] == '1': f -= 1 wer *= 2 wer %= 998244...
output
1
12,475
20
24,951
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,476
20
24,952
Tags: data structures, implementation, math Correct Solution: ``` n, m = map(int,input().split()) a = input() b = input() if n > m: b = (n-m)*'0' + b if m > n: a = (m - n)*'0' + a n = max(m, n) c = [] mod = 998244353 for i in range(0, n): c.append(int(b[i])) if i: c[i] += c[i-1] val = 1 ans = 0 ...
output
1
12,476
20
24,953
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,477
20
24,954
Tags: data structures, implementation, math Correct Solution: ``` ##################################### import atexit, io, sys, collections, math, heapq, fractions,copy, os, functools import sys import random import collections from io import BytesIO, IOBase ##################################### python 3 START ...
output
1
12,477
20
24,955
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,478
20
24,956
Tags: data structures, implementation, math Correct Solution: ``` n,m = map(int,input().split()) a = input() b = input() if n > m: b = '0'*(n-m) + b elif m > n: a = '0'*(m-n) + a ans = cnt = 0 mod = 998244353 for i in range(max(n,m)): if b[i] == '1': cnt += 1 if a[i] == '1': ans = (ans+cnt*pow(2,max(n,m...
output
1
12,478
20
24,957
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,479
20
24,958
Tags: data structures, implementation, math Correct Solution: ``` def modular_pow(base, exponent, modulus): result = 1 base = base % modulus while exponent > 0: if exponent % 2 == 1: result = (result * base) % modulus exponent = exponent >> 1 base = (base * base) % modulu...
output
1
12,479
20
24,959
Provide tags and a correct Python 3 solution for this coding contest problem. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by 2 rounding down (i.e. remove the last digit of ...
instruction
0
12,480
20
24,960
Tags: data structures, implementation, math Correct Solution: ``` def solve(a, b): res = 0 preprocess = 0 pw = 1 for i in range(len(b)): if i < len(a) and a[-i - 1] == '1': preprocess = (pw + preprocess) % 998244353 if b[-i - 1] == '1': res = (res + preprocess) % ...
output
1
12,480
20
24,961
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,481
20
24,962
Yes
output
1
12,481
20
24,963
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,482
20
24,964
Yes
output
1
12,482
20
24,965
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,483
20
24,966
Yes
output
1
12,483
20
24,967
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,484
20
24,968
Yes
output
1
12,484
20
24,969
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,485
20
24,970
No
output
1
12,485
20
24,971
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,486
20
24,972
No
output
1
12,486
20
24,973
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,487
20
24,974
No
output
1
12,487
20
24,975
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given two huge binary integer numbers a and b of lengths n and m respectively. You will repeat the following process: if b > 0, then add to the answer the value a~ \&~ b and divide b by ...
instruction
0
12,488
20
24,976
No
output
1
12,488
20
24,977
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,242
20
26,484
"Correct Solution: ``` import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,random,time,copy,functools sys.setrecursionlimit(10**7) inf = 10**20 eps = 1.0 / 10**10 mod = 998244353 def LI(): return [int(x) for x in sys.stdin.readline().split()] def LI_(): return [int(x)-1 for x in sys.stdin.rea...
output
1
13,242
20
26,485
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,243
20
26,486
"Correct Solution: ``` from itertools import * N=101198;n=range(N);a=list(n);a[1]=0 for i in range(2,int(N**.5)+1):a[i*2::i]=[0]*len(a[i*2::i]) for e in iter(input, '-1 -1'): qN, qP = map(int, e.split()) p=[x for x in a[qN+1:]if x][:qP+1] print(sorted(p[i]+p[j]for i in range(qP)for j in range(i,qP))[qP-1])...
output
1
13,243
20
26,487
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,244
20
26,488
"Correct Solution: ``` import bisect pr=[] for i in range(2,110000): for j in range(2,int(i**0.5)+1): if not i%j:break else:pr+=[i] while 1: n,p=map(int,input().split()) if n<0:break a=bisect.bisect_right(pr,n) print(sorted([pr[i]+pr[j] for i in range(a,a+p) for j in range(i,a+p)])[p-1])...
output
1
13,244
20
26,489
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,245
20
26,490
"Correct Solution: ``` from bisect import bisect_right as br from itertools import combinations_with_replacement as cwr MAX = 110000 ROOT = 340 tf = [True] * MAX tf[0] = tf[1] = False for i in range(2, ROOT + 1): if tf[i]: for j in range(i * i, MAX, i): tf[j] = False primes = [i for i in range(MAX) if tf[i...
output
1
13,245
20
26,491
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,246
20
26,492
"Correct Solution: ``` def prime(n): primes = [True] * (n+1) primes[0] = False primes[1] = False for i in range(2, int(n**0.5)+1): if not primes[i]: continue for j in range(i*2, n+1, i): primes[j] = False return [i for i in range(n+1) if primes[i]] while ...
output
1
13,246
20
26,493
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,247
20
26,494
"Correct Solution: ``` def eratosthenes(n): prime_table = [False,False,True]+[False if i%2!=0 else True for i in range(n-2)] i=3 pn=[2] while i*i<=n: if prime_table[i]: j=i*i pn.append(i) while j<=n: prime_table[j]=False j+=i ...
output
1
13,247
20
26,495
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,248
20
26,496
"Correct Solution: ``` prime = [True for i in range(200001)] prime[0] = False prime[1] = False p = 2 while p * p <= 200000: if prime[p]: for i in range(p * 2, 200001, p): prime[i] = False p += 1 while True: N, P = map(int, input().split()) if N < 0: exit() li = [] fo...
output
1
13,248
20
26,497
Provide a correct Python 3 solution for this coding contest problem. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to elucidate the truth of the universe. Professor Matsuzaki bel...
instruction
0
13,249
20
26,498
"Correct Solution: ``` import sys from math import sqrt from bisect import bisect inf = 1<<30 def solve(): primes = eratos(2 * 10**5) while 1: N, P = map(int, sys.stdin.readline().split()) if N == P == -1: return j = bisect(primes, N) lprimes = primes[j:j + 100]...
output
1
13,249
20
26,499
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to eluc...
instruction
0
13,250
20
26,500
Yes
output
1
13,250
20
26,501
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to eluc...
instruction
0
13,251
20
26,502
Yes
output
1
13,251
20
26,503
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to eluc...
instruction
0
13,252
20
26,504
Yes
output
1
13,252
20
26,505
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to eluc...
instruction
0
13,253
20
26,506
Yes
output
1
13,253
20
26,507
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Professor Matsuzaki is a scientist studying the truth of the universe. Life, the universe, all the answers are said to be 42, but Professor Matsuzaki thinks that this alone is not enough to eluc...
instruction
0
13,254
20
26,508
No
output
1
13,254
20
26,509
Provide tags and a correct Python 3 solution for this coding contest problem. Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Petya has two strin...
instruction
0
13,516
20
27,032
Tags: greedy, implementation Correct Solution: ``` a=input() b=input() sum1=0 sum2=0 for i in range(len(a)): if(a[i]!=b[i]): if(a[i]=='4'): sum1=sum1+1 else: sum2=sum2+1 print(max(sum1,sum2)) ```
output
1
13,516
20
27,033
Provide tags and a correct Python 3 solution for this coding contest problem. Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Petya has two strin...
instruction
0
13,517
20
27,034
Tags: greedy, implementation Correct Solution: ``` def question3(): A = list(input()) B = list(input()) count_7_4 = 0 count_4_7 = 0 for i in range(len(A)): if A[i] != B[i]: if A[i] == "4": count_4_7 += 1 else: count_7_4 += 1 count...
output
1
13,517
20
27,035
Provide tags and a correct Python 3 solution for this coding contest problem. Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Petya has two strin...
instruction
0
13,518
20
27,036
Tags: greedy, implementation Correct Solution: ``` def luckyConversion(): count1 = 0 count2 = 0 for i in range(len(a)): if a[i] == b[i]: pass else: if a[i] == '4': count1 += 1 if a[i] == '7': count2 += 1 ...
output
1
13,518
20
27,037
Provide tags and a correct Python 3 solution for this coding contest problem. Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Petya has two strin...
instruction
0
13,519
20
27,038
Tags: greedy, implementation Correct Solution: ``` def main(): l = [x == '7' for x, y in zip(input(), input()) if x != y] x = sum(l) print(max(x, len(l) - x)) if __name__ == '__main__': main() # Made By Mostafa_Khaled ```
output
1
13,519
20
27,039