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Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. Requirements * All inputs are of non-negative integer value. * T_{\text{max}} = 10000 * 200 \leq |V| \leq 400 * 1.5 |V| \leq |E| \leq 2 |V| * 1 \leq u_{i}, v_{i} \leq |V| (1 \leq i \leq |E|) * ...
instruction
0
2,269
13
4,538
No
output
1
2,269
13
4,539
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,483
13
6,966
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` import sys sys.setrecursionlimit(10 ** 6) int1 = lambda x: int(x) - 1 p2D = lambda x: print(*x, sep="\n") def II(): return int(sys.stdin.readline()) def MI(): return map(int, sys.stdin.readline().split()) def MI1(): return map(int1, sys.stdin.readline().sp...
output
1
3,483
13
6,967
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,484
13
6,968
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` import sys input = sys.stdin.readline getint = lambda: int(input()) getints = lambda: [int(a) for a in input().split()] if __name__ == "__main__": n = getint() colors = [(i*2-1) for i in getints()] tree = [[] for i in range(n)] for i in ran...
output
1
3,484
13
6,969
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,485
13
6,970
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` from types import GeneratorType def bootstrap(f, stack=[]): def wrappedfunc(*args, **kwargs): if stack: return f(*args, **kwargs) else: to = f(*args, **kwargs) while True: if type(to) i...
output
1
3,485
13
6,971
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,486
13
6,972
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` import os import sys from io import BytesIO, IOBase from types import GeneratorType from collections import defaultdict BUFSIZE = 8192 class FastIO(IOBase): newlines = 0 def __init__(self, file): self._fd = file.fileno() self.buf...
output
1
3,486
13
6,973
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,487
13
6,974
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` def main(): import sys input = sys.stdin.readline N = int(input()) A = list(map(int, input().split())) adj = [[] for _ in range(N+1)] for _ in range(N-1): a, b = map(int, input().split()) adj[a].append(b) adj...
output
1
3,487
13
6,975
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,488
13
6,976
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` class Graph: def __init__(self, n_vertices, edges, directed=True): self.n_vertices = n_vertices self.edges = edges self.directed = directed @property def adj(self): try: return self._adj exc...
output
1
3,488
13
6,977
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,489
13
6,978
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` import sys from collections import deque input = sys.stdin.buffer.readline N = int(input()) A = list(map(int, input().split())) A = [-1] + A adj = [[] for _ in range(N+1)] for _ in range(N-1): a, b = map(int, input().split()) adj[a].append(b) a...
output
1
3,489
13
6,979
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black). You have to solve...
instruction
0
3,490
13
6,980
Tags: dfs and similar, dp, graphs, trees Correct Solution: ``` import sys input = sys.stdin.readline N = int(input()) C = list(map(int, input().split())) T = [[] for _ in range(N)] edges = [] for _ in range(N-1): a, b = map(int, input().split()) a -= 1 b -= 1 edges.append([a, b]) T[a].append(b) ...
output
1
3,490
13
6,981
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,491
13
6,982
Yes
output
1
3,491
13
6,983
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,492
13
6,984
Yes
output
1
3,492
13
6,985
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,493
13
6,986
Yes
output
1
3,493
13
6,987
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,494
13
6,988
Yes
output
1
3,494
13
6,989
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,495
13
6,990
No
output
1
3,495
13
6,991
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,496
13
6,992
No
output
1
3,496
13
6,993
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,497
13
6,994
No
output
1
3,497
13
6,995
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and ...
instruction
0
3,498
13
6,996
No
output
1
3,498
13
6,997
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,533
13
7,066
Tags: data structures, greedy, implementation, trees Correct Solution: ``` from collections import defaultdict,deque for _ in range(int(input())): n,k=map(int,input().split()) g=defaultdict(list) for i in range(n-1): u,v=map(int,input().split()) u-=1;v-=1 g[u].append(v) g[v]....
output
1
3,533
13
7,067
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,534
13
7,068
Tags: data structures, greedy, implementation, trees Correct Solution: ``` from sys import stdin, gettrace if gettrace(): inputi = input else: def input(): return next(stdin)[:-1] def inputi(): return stdin.buffer.readline() def readGraph(n, m): adj = [set() for _ in range(n)] fo...
output
1
3,534
13
7,069
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,535
13
7,070
Tags: data structures, greedy, implementation, trees Correct Solution: ``` for i in range(int(input())): n,k=list(map(int,input().split())) a=[[] for i in range(n)] b=[0]*n c=[0]*n d=[0]*n e=[] for i in range(n-1): u,v=list(map(int,input().split())) a[u-1].append(v) a...
output
1
3,535
13
7,071
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,536
13
7,072
Tags: data structures, greedy, implementation, trees Correct Solution: ``` import collections t=int(input()) for i in range(t): n,k=map(int,input().split()) g=collections.defaultdict(list) for j in range(n-1): x,y=map(int,input().split()) g[x].append(y) g[y].append(x) if k==1: ...
output
1
3,536
13
7,073
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,537
13
7,074
Tags: data structures, greedy, implementation, trees Correct Solution: ``` from bisect import bisect_left as bl from bisect import bisect_right as br from heapq import heappush,heappop,heapify import math from collections import * from functools import reduce,cmp_to_key import sys input = sys.stdin.readline M = mod = 9...
output
1
3,537
13
7,075
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,538
13
7,076
Tags: data structures, greedy, implementation, trees Correct Solution: ``` from collections import defaultdict,deque import sys input=sys.stdin.readline t=int(input()) for ii in range(t): graph=defaultdict(list) n,k=map(int,input().split()) for i in range(n-1): u,v=map(int,input().split()) g...
output
1
3,538
13
7,077
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,539
13
7,078
Tags: data structures, greedy, implementation, trees Correct Solution: ``` def main(): from heapq import heapify, heappop, heappush import sys input = sys.stdin.readline for __ in [0]*int(input()): N, K = map(int, input().split()) G = [[] for _ in [0]*N] deg = [0]*N for ...
output
1
3,539
13
7,079
Provide tags and a correct Python 3 solution for this coding contest problem. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactly k leaves (leaf is such a vertex that is conne...
instruction
0
3,540
13
7,080
Tags: data structures, greedy, implementation, trees Correct Solution: ``` from collections import defaultdict, deque import heapq class Graph: def __init__(self, vertices): self.graph = [defaultdict() for x in range(vertices+1)] self.V = vertices def addEdge(self, u, v, w=1): self....
output
1
3,540
13
7,081
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,541
13
7,082
Yes
output
1
3,541
13
7,083
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,542
13
7,084
Yes
output
1
3,542
13
7,085
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,543
13
7,086
Yes
output
1
3,543
13
7,087
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,544
13
7,088
Yes
output
1
3,544
13
7,089
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,545
13
7,090
No
output
1
3,545
13
7,091
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,546
13
7,092
No
output
1
3,546
13
7,093
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,547
13
7,094
No
output
1
3,547
13
7,095
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You are given a tree (connected graph without cycles) consisting of n vertices. The tree is unrooted — it is just a connected undirected graph without cycles. In one move, you can choose exactl...
instruction
0
3,548
13
7,096
No
output
1
3,548
13
7,097
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,660
13
7,320
Tags: brute force, dfs and similar, graphs Correct Solution: ``` """ Satwik_Tiwari ;) . 21st AUGUST , 2020 - FRIDAY """ #=============================================================================================== #importing some useful libraries. from __future__ import division, print_function from fract...
output
1
3,660
13
7,321
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,661
13
7,322
Tags: brute force, dfs and similar, graphs Correct Solution: ``` # Author : nitish420 -------------------------------------------------------------------- import os import sys from io import BytesIO, IOBase from math import inf def main(): n,m=map(int,input().split()) c=[-1]+list(map(int,input().split())) k=max(c)+...
output
1
3,661
13
7,323
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,662
13
7,324
Tags: brute force, dfs and similar, graphs Correct Solution: ``` from sys import stdin from collections import * def arr_inp(n): if n == 1: return [int(x) for x in stdin.readline().split()] elif n == 2: return [float(x) for x in stdin.readline().split()] else: return list(stdin.rea...
output
1
3,662
13
7,325
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,663
13
7,326
Tags: brute force, dfs and similar, graphs Correct Solution: ``` import os import sys from io import BytesIO, IOBase BUFSIZE = 8192 class FastIO(IOBase): newlines = 0 def __init__(self, file): self._fd = file.fileno() self.buffer = BytesIO() self.writable = "x" in file.mode or "r" no...
output
1
3,663
13
7,327
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,664
13
7,328
Tags: brute force, dfs and similar, graphs Correct Solution: ``` from sys import stdin def main(): n, m = map(int, input().split()) cc = [0, *map(int, input().split())] d, f = {c: set() for c in cc}, cc.__getitem__ for s in stdin.read().splitlines(): u, v = map(f, map(int, s.split())) ...
output
1
3,664
13
7,329
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,665
13
7,330
Tags: brute force, dfs and similar, graphs Correct Solution: ``` from collections import defaultdict n, m = map(int, input().split()) c = list(map(int, input().split())) res = defaultdict(set) for _ in range(m): u, v = map(lambda x: int(x) - 1, input().split()) if c[u] != c[v]: res[c[u]].add(c[v]) ...
output
1
3,665
13
7,331
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,666
13
7,332
Tags: brute force, dfs and similar, graphs Correct Solution: ``` n, m = map(int, input().split()) c = list(map(int, input().split())) M =max(c) g= [set() for _ in range(M+1)] for _ in range(m): a, b = map(int, input().split()) a -=1 b -= 1 if c[a] != c[b]: g[c[a]].add(c[b]) g[c[b]].ad...
output
1
3,666
13
7,333
Provide tags and a correct Python 3 solution for this coding contest problem. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of the i-th vertex is an integer ci. Let's consi...
instruction
0
3,667
13
7,334
Tags: brute force, dfs and similar, graphs Correct Solution: ``` from collections import defaultdict from sys import stdin input = stdin.readline class N: def __init__(self, c) -> None: self.c = c self.ch = [] if __name__ == '__main__': n, m = map(int, input().split()) carr = list(map(in...
output
1
3,667
13
7,335
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,668
13
7,336
Yes
output
1
3,668
13
7,337
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,669
13
7,338
Yes
output
1
3,669
13
7,339
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,670
13
7,340
Yes
output
1
3,670
13
7,341
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,671
13
7,342
Yes
output
1
3,671
13
7,343
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,672
13
7,344
No
output
1
3,672
13
7,345
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,673
13
7,346
No
output
1
3,673
13
7,347
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,674
13
7,348
No
output
1
3,674
13
7,349
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. You've got an undirected graph, consisting of n vertices and m edges. We will consider the graph's vertices numbered with integers from 1 to n. Each vertex of the graph has a color. The color of...
instruction
0
3,675
13
7,350
No
output
1
3,675
13
7,351
Provide tags and a correct Python 3 solution for this coding contest problem. Greg has a weighed directed graph, consisting of n vertices. In this graph any pair of distinct vertices has an edge between them in both directions. Greg loves playing with the graph and now he has invented a new game: * The game consist...
instruction
0
3,680
13
7,360
Tags: dp, graphs, shortest paths Correct Solution: ``` import sys from array import array # noqa: F401 n = int(input()) matrix = [array('i', list(map(int, input().split()))) for _ in range(n)] aa = tuple(map(lambda x: int(x) - 1, input().split())) ans = [''] * n for i in range(n-1, -1, -1): x = aa[i] for a ...
output
1
3,680
13
7,361