message stringlengths 2 49.9k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 446 108k | cluster float64 13 13 | __index_level_0__ int64 892 217k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A tree is a connected undirected graph consisting of n vertices and n - 1 edges. Vertices are numbered 1 through n.
Limak is a little polar bear and Radewoosh is his evil enemy. Limak once had ... | instruction | 0 | 83,022 | 13 | 166,044 |
No | output | 1 | 83,022 | 13 | 166,045 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A tree is a connected undirected graph consisting of n vertices and n - 1 edges. Vertices are numbered 1 through n.
Limak is a little polar bear and Radewoosh is his evil enemy. Limak once had ... | instruction | 0 | 83,023 | 13 | 166,046 |
No | output | 1 | 83,023 | 13 | 166,047 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A tree is a connected undirected graph consisting of n vertices and n - 1 edges. Vertices are numbered 1 through n.
Limak is a little polar bear and Radewoosh is his evil enemy. Limak once had ... | instruction | 0 | 83,024 | 13 | 166,048 |
No | output | 1 | 83,024 | 13 | 166,049 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A tree is a connected undirected graph consisting of n vertices and n - 1 edges. Vertices are numbered 1 through n.
Limak is a little polar bear and Radewoosh is his evil enemy. Limak once had ... | instruction | 0 | 83,025 | 13 | 166,050 |
No | output | 1 | 83,025 | 13 | 166,051 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,156 | 13 | 166,312 |
"Correct Solution:
```
#!/usr/bin/env python3
import sys
sys.setrecursionlimit(10**8)
from collections import defaultdict
INF = float("inf")
MOD = 10**9+7
class Graph(object):
def __init__(self, N):
self.N = N
self.E = defaultdict(list)
def add_edge(self, f, t, w=1):
self.E[f].append(... | output | 1 | 83,156 | 13 | 166,313 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,157 | 13 | 166,314 |
"Correct Solution:
```
import sys
from collections import defaultdict
# 再帰制限を緩和するおまじない
sys.setrecursionlimit(10**6)
def sum(n):return n*(n+1)//2
# 部分木のサイズと、「色iを封鎖したときに到達できない頂点の個数」を持つ辞書を返す
def dfs(v,p):
ret=defaultdict(int)
size=1
for vv in g[v]:
if vv==p:
continue
ss,d=dfs(vv,... | output | 1 | 83,157 | 13 | 166,315 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,158 | 13 | 166,316 |
"Correct Solution:
```
import sys
n = int(input())
c = list(map(int, input().split()))
c = [x-1 for x in c]
# print(c)
adj = [[] for i in range(n)]
for i in range(n-1):
a, b = tuple(map(int, input().split()))
a -= 1
b -= 1
adj[a].append(b)
adj[b].append(a)
size = [1 for i in range(n)]
stack = [[] ... | output | 1 | 83,158 | 13 | 166,317 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,159 | 13 | 166,318 |
"Correct Solution:
```
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
sys.setrecursionlimit(10**7)
from pprint import pprint as pp
from pprint import pformat as pf
# @pysnooper.snoop()
#import pysnooper # debug
import math
#from sortedcontainers import SortedList, SortedDict, SortedSet # no in atcoder
impor... | output | 1 | 83,159 | 13 | 166,319 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,160 | 13 | 166,320 |
"Correct Solution:
```
import sys
# 小さすぎても怒られるので
from collections import defaultdict
n = int(input())
sys.setrecursionlimit(max(1000, 2*n))
cs = [0] + [int(c) for c in input().split()]
ns = defaultdict(set)
for _ in range(n-1):
a,b = [int(c) for c in input().split()]
ns[a].add(b)
ns[b].add(a)
ans = [0] *... | output | 1 | 83,160 | 13 | 166,321 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,161 | 13 | 166,322 |
"Correct Solution:
```
import sys
input=sys.stdin.readline
sys.setrecursionlimit(10**7)
N=int(input())
c=list(map(int,input().split()))
for i in range(N):
c[i]-=1
edge=[[] for i in range(N)]
for i in range(N-1):
a,b=map(int,input().split())
edge[a-1].append(b-1)
edge[b-1].append(a-1)
subtree=[1]*N
de... | output | 1 | 83,161 | 13 | 166,323 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,162 | 13 | 166,324 |
"Correct Solution:
```
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**9)
n = int(input())
c = list(map(lambda x: int(x) - 1, input().split()))
graph = [[] for _ in range(n)]
for _ in range(n - 1):
a, b = map(int, input().split())
a -= 1
b -= 1
graph[a].append(b)
graph[b].append(a)... | output | 1 | 83,162 | 13 | 166,325 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, the color of each vertex is represented by an integer bet... | instruction | 0 | 83,163 | 13 | 166,326 |
"Correct Solution:
```
import sys
input = lambda: sys.stdin.readline().rstrip()
N = int(input())
C = [int(a) - 1 for a in input().split()]
X = [[] for i in range(N)]
head = [-1] * (N + 1)
to = [0] * (N - 1 << 1)
nxt = [0] * (N - 1 << 1)
for i in range(N-1):
x, y = map(int, input().split())
x, y = x-1, y-1
n... | output | 1 | 83,163 | 13 | 166,327 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,164 | 13 | 166,328 |
Yes | output | 1 | 83,164 | 13 | 166,329 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,165 | 13 | 166,330 |
Yes | output | 1 | 83,165 | 13 | 166,331 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,166 | 13 | 166,332 |
Yes | output | 1 | 83,166 | 13 | 166,333 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,167 | 13 | 166,334 |
Yes | output | 1 | 83,167 | 13 | 166,335 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,168 | 13 | 166,336 |
No | output | 1 | 83,168 | 13 | 166,337 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,169 | 13 | 166,338 |
No | output | 1 | 83,169 | 13 | 166,339 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,170 | 13 | 166,340 |
No | output | 1 | 83,170 | 13 | 166,341 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices numbered 1 to N. The i-th edge in this tree connects Vertex a_i and b_i. Additionally, each vertex is painted in a color, and the color of Vertex i is c_i. Here, t... | instruction | 0 | 83,171 | 13 | 166,342 |
No | output | 1 | 83,171 | 13 | 166,343 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,188 | 13 | 166,376 |
"Correct Solution:
```
"""
無理な場合を考えてみよう
→全体の辺の本数が奇数なら絶対無理
それ以外は？
説1:辺が偶数なら絶対作れる説
辺を選択し、そのどちらか片方にのみ xor1する
→すべての辺の数字を0にできるか？？(初期値は0)
なんかできそう
辺の向きを変えることで1を伝播させることが出来る
→同じ点にぶつけられる！！
ので、偶数本なら絶対できる
どうやって構成する？
適当に置く→1の点を適当に2つ選び、パス上にある辺を全部反転させる
確かにできるけど…遅くね？
もっと簡単にできないか？
適当に木を取る→深い方から整合性を合わせていけば終わり(最終的には根に収束するので)
各点に関し... | output | 1 | 83,188 | 13 | 166,377 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,189 | 13 | 166,378 |
"Correct Solution:
```
from heapq import heappush, heappop
N, M = map(int, input().split())
A, B = (
zip(*(map(int, input().split()) for _ in range(M))) if M else
((), ())
)
class UnionFindTree:
def __init__(self, n):
self.p = [i for i in range(n + 1)]
self.r = [1 for _ in range(n + 1)]
... | output | 1 | 83,189 | 13 | 166,379 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,190 | 13 | 166,380 |
"Correct Solution:
```
import sys
sys.setrecursionlimit(10**6)
from collections import deque
n, m = map(int, input().split())
AB = [[int(x) for x in input().split()] for _ in range(m)]
# representation matrix
repn = [[] for j in range(n)]
for a, b in AB:
a -= 1
b -= 1
repn[a].append(b)
repn[b].append(... | output | 1 | 83,190 | 13 | 166,381 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,191 | 13 | 166,382 |
"Correct Solution:
```
from sys import setrecursionlimit
setrecursionlimit(10 ** 8)
n, m = [int(i) for i in input().split()]
A = [[int(i) for i in input().split()] for i in range(m)]
if m % 2 == 1:
print(-1)
exit()
E = [[] for i in range(n + 1)]
used_e = [False] * m
ans = []
for i, (a, b) in enumerate(A):
... | output | 1 | 83,191 | 13 | 166,383 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,192 | 13 | 166,384 |
"Correct Solution:
```
from collections import deque
N, M = map(int, input().split())
V = {i: [] for i in range(1,N+1)}
for _ in range(M):
a, b = map(int, input().split())
V[a].append(b)
V[b].append(a)
def zen(V):
W = []
q = deque()
q.append(1)
vstd = {i: 0 for i in range(1,N+1)}
while... | output | 1 | 83,192 | 13 | 166,385 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,193 | 13 | 166,386 |
"Correct Solution:
```
#!/usr/bin/env python3
import sys
from collections import defaultdict, deque
import heapq
def solve(N: int, M: int, A: "List[int]", B: "List[int]"):
if M % 2 != 0:
print(-1)
return
adj = defaultdict(set)
for a, b in zip(A, B):
adj[a].add(b)
adj[b].ad... | output | 1 | 83,193 | 13 | 166,387 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,194 | 13 | 166,388 |
"Correct Solution:
```
n, m, *L = map(int, open(0).read().split())
con = [[] for _ in range(n)]
for s, t in zip(*[iter(L)] * 2):
con[s - 1] += t - 1,
con[t - 1] += s - 1,
# 辺を取り出して木をつくる
tree = [[] for _ in range(n)]
lev = [0] * n
vis = [False] * n
vis[0] = True
reserve = set()
q = [0]
while q:
cur = q.pop()
for nx... | output | 1 | 83,194 | 13 | 166,389 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one of the two possible directions to each of the edges in th... | instruction | 0 | 83,195 | 13 | 166,390 |
"Correct Solution:
```
import sys
input = sys.stdin.readline
def main():
N, M = map(int, input().split())
graph = [[] for _ in range(N)]
for _ in range(M):
a, b = map(int, input().split())
graph[a-1].append(b-1)
graph[b-1].append(a-1)
if M%2 == 1:
print(-1)
ret... | output | 1 | 83,195 | 13 | 166,391 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,196 | 13 | 166,392 |
Yes | output | 1 | 83,196 | 13 | 166,393 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,197 | 13 | 166,394 |
Yes | output | 1 | 83,197 | 13 | 166,395 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,198 | 13 | 166,396 |
Yes | output | 1 | 83,198 | 13 | 166,397 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,199 | 13 | 166,398 |
Yes | output | 1 | 83,199 | 13 | 166,399 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,200 | 13 | 166,400 |
No | output | 1 | 83,200 | 13 | 166,401 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,201 | 13 | 166,402 |
No | output | 1 | 83,201 | 13 | 166,403 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,202 | 13 | 166,404 |
No | output | 1 | 83,202 | 13 | 166,405 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a simple connected undirected graph with N vertices and M edges. The vertices are numbered 1 to N, and the i-th edge connects Vertex A_i and Vertex B_i. Takahashi will assign one o... | instruction | 0 | 83,203 | 13 | 166,406 |
No | output | 1 | 83,203 | 13 | 166,407 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,236 | 13 | 166,472 |
"Correct Solution:
```
from collections import deque
n,m = map(int,input().split())
graph = [[] for _ in range(n)]
deg = [0]*n
seen = [False]*n
for i in range(m):
x,y = map(int,input().split())
graph[x-1] += [y-1]
graph[y-1] += [x-1]
deg[x-1] += 1
deg[y-1] += 1
q = deque([i for i in range(n) if deg[... | output | 1 | 83,236 | 13 | 166,473 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,237 | 13 | 166,474 |
"Correct Solution:
```
N,M=map(int,input().split())
List=[[int(i) for i in input().split()] for i in range(M)]
S=0
for i in range(M):
new_List=list(List)
del new_List[i]
islands=[1]
for i in islands:
for j in new_List:
if i in j:
j=[item for item in j if item not in islands]
islands.ex... | output | 1 | 83,237 | 13 | 166,475 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,238 | 13 | 166,476 |
"Correct Solution:
```
N,M=map(int,input().split())
AB=[list(map(int,input().split())) for i in range(M)]
r=0
for m in range(M):
c=[[] for i in range(N)]
for i,(a,b) in enumerate(AB):
if i!=m:
c[a-1].append(b-1)
c[b-1].append(a-1)
q=[0]
v=[1]+[0]*(N-1)
while q:
... | output | 1 | 83,238 | 13 | 166,477 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,239 | 13 | 166,478 |
"Correct Solution:
```
n,m=map(int,input().split())
g=[list() for _ in range(n+1)]
side=[list(map(int,input().split())) for i in range(m)]
for a,b in side:
g[a].append(b)
g[b].append(a)
cnt=0
def dfs(x,s):
ed[x-1]=1
for i in g[x]:
if s!={x,i} and ed[i-1]==0:dfs(i,s)
cnt=0
for i in range(m):
ed=[0]*n
dfs(1,set(s... | output | 1 | 83,239 | 13 | 166,479 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,240 | 13 | 166,480 |
"Correct Solution:
```
N,M = map(int,input().split())
ab = [list(map(int,input().split())) for _ in range(M)]
ans = 0
for i in range(M):
ab2 = ab[:i] + ab[i+1:]
connect = [[] for _ in range(N+1)]
for a,b in ab2:
connect[a].append(b)
connect[b].append(a)
V = [-1] * (N+1)
V[0] = 0
... | output | 1 | 83,240 | 13 | 166,481 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,241 | 13 | 166,482 |
"Correct Solution:
```
n,m=map(int,input().split())
AB=[list(map(int,input().split())) for _ in range(m)]
def dfs(x):
if visit[x]==True:
return
visit[x]=True
for i in range(n):
if graph[x][i]==True:
dfs(i)
ans=0
for i in range(m):
graph=[[False]*n for _ in range(n)]
for j in range(m):
if j... | output | 1 | 83,241 | 13 | 166,483 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,242 | 13 | 166,484 |
"Correct Solution:
```
import sys
n, m, *ab = map(int, sys.stdin.read().split())
graph = [set() for _ in range(n)]
for a, b in zip(*[iter(ab)] * 2):
a -= 1; b -= 1
graph[a].add(b); graph[b].add(a)
def main():
stack = [i for i in range(n) if len(graph[i]) == 1]
bridges = 0
while stack:
x =... | output | 1 | 83,242 | 13 | 166,485 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An edge whose removal disconnects the graph is called a br... | instruction | 0 | 83,243 | 13 | 166,486 |
"Correct Solution:
```
n, m = map(int, input().split())
ab = [list(map(int, input().split())) for i in range(m)]
ad = [[0]*n for i in range(n)]
for x in ab:
ad[x[0]-1][x[1]-1] = 1
ad[x[1]-1][x[0]-1] = 1
nodes = [0]*n
ans = 0
flag = True
while flag:
flag = False
for i in range(n):
if nodes[i]... | output | 1 | 83,243 | 13 | 166,487 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An... | instruction | 0 | 83,244 | 13 | 166,488 |
Yes | output | 1 | 83,244 | 13 | 166,489 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An... | instruction | 0 | 83,245 | 13 | 166,490 |
Yes | output | 1 | 83,245 | 13 | 166,491 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An... | instruction | 0 | 83,246 | 13 | 166,492 |
Yes | output | 1 | 83,246 | 13 | 166,493 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An... | instruction | 0 | 83,247 | 13 | 166,494 |
Yes | output | 1 | 83,247 | 13 | 166,495 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An... | instruction | 0 | 83,248 | 13 | 166,496 |
No | output | 1 | 83,248 | 13 | 166,497 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph with N vertices and M edges that does not contain self-loops and double edges.
The i-th edge (1 \leq i \leq M) connects Vertex a_i and Vertex b_i.
An... | instruction | 0 | 83,249 | 13 | 166,498 |
No | output | 1 | 83,249 | 13 | 166,499 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.