message stringlengths 2 44.5k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 42 109k | cluster float64 5 5 | __index_level_0__ int64 84 217k |
|---|---|---|---|---|---|
Provide a correct Python 3 solution for this coding contest problem.
Problem statement
There is a rational number sequence $ X_0, X_1, X_2, ..., X_N $. Each term is defined as follows.
1. $ X_0 = 0 $
2. $ X_i = X_ {i-1} $ $ op_i $ $ Y_i $ ($ 1 \ leq i \ leq N $). However, $ op_i $ is $ + $, $ − $, $ × $, $ ÷ $ Eith... | instruction | 0 | 8,349 | 5 | 16,698 |
"Correct Solution:
```
m=10000000019
x=0
def mod(x):return (x%m+m)%m
def pow(x,a):
ret=1
while a:
if(a&1):ret=mod(x*ret)
x=mod(x*x)
a>>=1
return ret
for _ in range(int(input())):
o,y=map(int,input().split())
if o==1:x=(x+y)%m
elif o==2:x=(x-y)%m
elif o==3:x=mod(x*y)
... | output | 1 | 8,349 | 5 | 16,699 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem statement
There is a rational number sequence $ X_0, X_1, X_2, ..., X_N $. Each term is defined as follows.
1. $ X_0 = 0 $
2. $ X_i = X_ {i-1} $ $ op_i $ $ Y_i $ ($ 1 \ leq i \ leq N ... | instruction | 0 | 8,350 | 5 | 16,700 |
No | output | 1 | 8,350 | 5 | 16,701 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem statement
There is a rational number sequence $ X_0, X_1, X_2, ..., X_N $. Each term is defined as follows.
1. $ X_0 = 0 $
2. $ X_i = X_ {i-1} $ $ op_i $ $ Y_i $ ($ 1 \ leq i \ leq N ... | instruction | 0 | 8,351 | 5 | 16,702 |
No | output | 1 | 8,351 | 5 | 16,703 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,362 | 5 | 16,724 |
"Correct Solution:
```
import sys
input = sys.stdin.readline
class LazyPropSegmentTree:
def __init__(self, lst, op, apply, comp, e, identity):
self.n = len(lst)
self.depth = (self.n - 1).bit_length()
self.N = 1 << self.depth
self.op = op # binary operation of elements
self.a... | output | 1 | 8,362 | 5 | 16,725 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,363 | 5 | 16,726 |
"Correct Solution:
```
#!/usr/bin/env python3
# DSL_2_G: RSQ and RAQ
# Range Add Query and Range Sum Query
class BinaryIndexedTree:
def __init__(self, n):
self.size = n
self.bit = [0] * (self.size+1)
def add(self, i, v):
while i <= self.size:
self.bit[i] += v
i... | output | 1 | 8,363 | 5 | 16,727 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,364 | 5 | 16,728 |
"Correct Solution:
```
# Binary Indexed Tree (Fenwick Tree)
class BIT:
def __init__(self, n):
self.n = n
self.data = [0]*(n+1)
self.el = [0]*(n+1)
def sum(self, i):
s = 0
while i > 0:
s += self.data[i]
i -= i & -i
return s
def add(self, i, x):
# assert i > 0
self.el[i] ... | output | 1 | 8,364 | 5 | 16,729 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,365 | 5 | 16,730 |
"Correct Solution:
```
class BinaryIndexedTree():
def __init__(self, n):
self.n = n
self.dat = [0] * (n + 1)
def sum(self, i):
s = 0
while i:
s += self.dat[i]
i -= i & -i
return s
def add(self, i, x):
while i <= self.n:
se... | output | 1 | 8,365 | 5 | 16,731 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,366 | 5 | 16,732 |
"Correct Solution:
```
import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,copy,functools
import time,random
sys.setrecursionlimit(10**7)
inf = 10**20
eps = 1.0 / 10**10
mod = 10**9+7
mod2 = 998244353
dd = [(-1,0),(0,1),(1,0),(0,-1)]
ddn = [(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)... | output | 1 | 8,366 | 5 | 16,733 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,367 | 5 | 16,734 |
"Correct Solution:
```
class BinaryIndexedTree:
def __init__(self, n):
self.a = [0] * (n + 1)
self.n = n
def add(self, i, x):
while i <= self.n:
self.a[i] += x
i += i & -i
def sum(self, i):
ret = 0
while i > 0:
ret += self.a[i]
... | output | 1 | 8,367 | 5 | 16,735 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,368 | 5 | 16,736 |
"Correct Solution:
```
class BinaryIndexedTree(): #1-indexed
def __init__(self, n):
self.n = n
self.tree = [0 for _ in range(n + 1)]
def sum(self, idx):
res = 0
while idx:
res += self.tree[idx]
idx -= idx & -idx
return res
def add(self, idx,... | output | 1 | 8,368 | 5 | 16,737 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ..., at.
Note that the initial values of ai (i = 1, 2, . ... | instruction | 0 | 8,369 | 5 | 16,738 |
"Correct Solution:
```
def _gidx(l, r, treesize):
'''
lazy propagation用idx生成器 木の下から生成される。1based-indexなので注意.(使うときは-1するとか)
もとの配列において[l,r)を指定したときに更新すべきidxをyieldする
treesizeは多くの場合self.num
'''
L, R = l + treesize, r + treesize
lm = (L // (L & -L)) >> 1 # これで成り立つの天才か？
rm = (R // (R & -R)) >> ... | output | 1 | 8,369 | 5 | 16,739 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ...,... | instruction | 0 | 8,370 | 5 | 16,740 |
Yes | output | 1 | 8,370 | 5 | 16,741 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ...,... | instruction | 0 | 8,371 | 5 | 16,742 |
Yes | output | 1 | 8,371 | 5 | 16,743 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ...,... | instruction | 0 | 8,372 | 5 | 16,744 |
Yes | output | 1 | 8,372 | 5 | 16,745 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ...,... | instruction | 0 | 8,373 | 5 | 16,746 |
Yes | output | 1 | 8,373 | 5 | 16,747 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ...,... | instruction | 0 | 8,374 | 5 | 16,748 |
No | output | 1 | 8,374 | 5 | 16,749 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which manipulates a sequence A = {a1, a2, . . . , an} with the following operations:
* add(s, t, x): add x to as, as+1, ..., at.
* getSum(s, t): report the sum of as, as+1, ...,... | instruction | 0 | 8,375 | 5 | 16,750 |
No | output | 1 | 8,375 | 5 | 16,751 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n arrays a_1, a_2, ..., a_n; each array consists of exactly m integers. We denote the y-th element of the x-th array as a_{x, y}.
You have to choose two arrays a_i and a_j (1 ≤ i,... | instruction | 0 | 8,487 | 5 | 16,974 |
Yes | output | 1 | 8,487 | 5 | 16,975 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n arrays a_1, a_2, ..., a_n; each array consists of exactly m integers. We denote the y-th element of the x-th array as a_{x, y}.
You have to choose two arrays a_i and a_j (1 ≤ i,... | instruction | 0 | 8,489 | 5 | 16,978 |
Yes | output | 1 | 8,489 | 5 | 16,979 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n arrays a_1, a_2, ..., a_n; each array consists of exactly m integers. We denote the y-th element of the x-th array as a_{x, y}.
You have to choose two arrays a_i and a_j (1 ≤ i,... | instruction | 0 | 8,491 | 5 | 16,982 |
No | output | 1 | 8,491 | 5 | 16,983 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n arrays a_1, a_2, ..., a_n; each array consists of exactly m integers. We denote the y-th element of the x-th array as a_{x, y}.
You have to choose two arrays a_i and a_j (1 ≤ i,... | instruction | 0 | 8,493 | 5 | 16,986 |
No | output | 1 | 8,493 | 5 | 16,987 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,518 | 5 | 17,036 |
Yes | output | 1 | 8,518 | 5 | 17,037 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,519 | 5 | 17,038 |
Yes | output | 1 | 8,519 | 5 | 17,039 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,520 | 5 | 17,040 |
Yes | output | 1 | 8,520 | 5 | 17,041 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,521 | 5 | 17,042 |
Yes | output | 1 | 8,521 | 5 | 17,043 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,522 | 5 | 17,044 |
No | output | 1 | 8,522 | 5 | 17,045 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,523 | 5 | 17,046 |
No | output | 1 | 8,523 | 5 | 17,047 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,524 | 5 | 17,048 |
No | output | 1 | 8,524 | 5 | 17,049 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two positive integers n (1 ≤ n ≤ 10^9) and k (1 ≤ k ≤ 100). Represent the number n as the sum of k positive integers of the same parity (have the same remainder when divided by 2).... | instruction | 0 | 8,525 | 5 | 17,050 |
No | output | 1 | 8,525 | 5 | 17,051 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Barbara was late for her math class so as a punishment the teacher made her solve the task on a sheet of paper. Barbara looked at the sheet of paper and only saw n numbers a_1, a_2, …, a_n witho... | instruction | 0 | 8,567 | 5 | 17,134 |
No | output | 1 | 8,567 | 5 | 17,135 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Barbara was late for her math class so as a punishment the teacher made her solve the task on a sheet of paper. Barbara looked at the sheet of paper and only saw n numbers a_1, a_2, …, a_n witho... | instruction | 0 | 8,568 | 5 | 17,136 |
No | output | 1 | 8,568 | 5 | 17,137 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,600 | 5 | 17,200 |
Yes | output | 1 | 8,600 | 5 | 17,201 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,601 | 5 | 17,202 |
Yes | output | 1 | 8,601 | 5 | 17,203 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,602 | 5 | 17,204 |
Yes | output | 1 | 8,602 | 5 | 17,205 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,603 | 5 | 17,206 |
No | output | 1 | 8,603 | 5 | 17,207 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,604 | 5 | 17,208 |
No | output | 1 | 8,604 | 5 | 17,209 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,605 | 5 | 17,210 |
No | output | 1 | 8,605 | 5 | 17,211 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a of n integers. Find the number of pairs (i, j) (1 ≤ i < j ≤ n) where the sum of a_i + a_j is greater than or equal to l and less than or equal to r (that is, l ≤ a_i + a... | instruction | 0 | 8,606 | 5 | 17,212 |
No | output | 1 | 8,606 | 5 | 17,213 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai for any positive integer i (i < n).
Vasya want... | instruction | 0 | 8,610 | 5 | 17,220 |
Tags: greedy, math
Correct Solution:
```
n=int(input())
b=list(map(int,input().split()))
s=0
res=[]
j=n-1
while(j>=0):
if s<=0:
s+=b[j]
res.append(1)
else:
s-=b[j]
res.append(0)
j+=-1
res.reverse()
if s>=0:
for j in res:
if j:
print("+",end="")
... | output | 1 | 8,610 | 5 | 17,221 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai for any positive integer i (i < n).
Vasya want... | instruction | 0 | 8,612 | 5 | 17,224 |
Tags: greedy, math
Correct Solution:
```
n = int(input())
arr = list(map(int, input().split()))
if n == 1:
print('+')
elif n == 2:
print('-+')
else:
ans = ['+']
cur = arr[-1]
for i in range(n - 2, -1, -1):
if cur > 0:
cur -= arr[i]
ans.append('-')
else:
... | output | 1 | 8,612 | 5 | 17,225 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai for any positive integer i (i < n).
Vasya want... | instruction | 0 | 8,613 | 5 | 17,226 |
Tags: greedy, math
Correct Solution:
```
# ---------------------------iye ha aam zindegi---------------------------------------------
import math
import random
import heapq, bisect
import sys
from collections import deque, defaultdict
from fractions import Fraction
import sys
import threading
from collections import de... | output | 1 | 8,613 | 5 | 17,227 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai for any positive integer i (i < n).
Vasya want... | instruction | 0 | 8,614 | 5 | 17,228 |
Tags: greedy, math
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
r = [0] * n
s = 0
for i in range(n - 1, -1, -1):
if abs(s + a[i]) <= a[i]:
s += a[i]
else:
s -= a[i]
r[i] = 1
if s<0:
print(''.join(['-', '+'][i] for i in r))
else:
print(''.join(['+', '... | output | 1 | 8,614 | 5 | 17,229 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai for any positive integer i (i < n).
Vasya want... | instruction | 0 | 8,616 | 5 | 17,232 |
Tags: greedy, math
Correct Solution:
```
def invert(s):
t = ''
for i in s:
if(i =='+'):
t += '-'
else:
t += '+'
#print(s,t)
return t
n = int(input())
if(n==1):
print('+')
exit()
a=list(map(int,input().split()))
cur = a[-1]
s = '+'
for i in range(n-2,0,-... | output | 1 | 8,616 | 5 | 17,233 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai ... | instruction | 0 | 8,617 | 5 | 17,234 |
Yes | output | 1 | 8,617 | 5 | 17,235 |
Evaluate the correctness of the submitted Python 2 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai ... | instruction | 0 | 8,618 | 5 | 17,236 |
Yes | output | 1 | 8,618 | 5 | 17,237 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai ... | instruction | 0 | 8,619 | 5 | 17,238 |
No | output | 1 | 8,619 | 5 | 17,239 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai ... | instruction | 0 | 8,620 | 5 | 17,240 |
No | output | 1 | 8,620 | 5 | 17,241 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai ... | instruction | 0 | 8,621 | 5 | 17,242 |
No | output | 1 | 8,621 | 5 | 17,243 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya has found a piece of paper with an array written on it. The array consists of n integers a1, a2, ..., an. Vasya noticed that the following condition holds for the array ai ≤ ai + 1 ≤ 2·ai ... | instruction | 0 | 8,622 | 5 | 17,244 |
No | output | 1 | 8,622 | 5 | 17,245 |
Provide a correct Python 3 solution for this coding contest problem.
Example
Input
3
3 0 1
Output
2 | instruction | 0 | 9,005 | 5 | 18,010 |
"Correct Solution:
```
n=int(input())
d=''.join(''.join(input().split())for i in[0]*(n//19+(n%19!=0)))
i=0
while 1:
if d.find(str(i))==-1:
print(i)
exit()
i+=1
``` | output | 1 | 9,005 | 5 | 18,011 |
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