結果

問題 No.1640 簡単な色塗り
ユーザー ansainansain
提出日時 2021-08-07 03:56:03
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 588 ms / 2,000 ms
コード長 3,716 bytes
コンパイル時間 443 ms
コンパイル使用メモリ 87,332 KB
実行使用メモリ 155,052 KB
最終ジャッジ日時 2023-09-12 03:40:56
合計ジャッジ時間 26,012 ms
ジャッジサーバーID
（参考情報） 		judge11 / judge15
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 89 ms
71,988 KB
testcase_01 AC 87 ms
71,928 KB
testcase_02 AC 87 ms
71,980 KB
testcase_03 AC 90 ms
71,772 KB
testcase_04 AC 227 ms
134,168 KB
testcase_05 AC 263 ms
150,936 KB
testcase_06 AC 89 ms
71,860 KB
testcase_07 AC 89 ms
71,468 KB
testcase_08 AC 89 ms
71,856 KB
testcase_09 AC 87 ms
71,984 KB
testcase_10 AC 374 ms
124,064 KB
testcase_11 AC 352 ms
115,296 KB
testcase_12 AC 327 ms
108,516 KB
testcase_13 AC 492 ms
146,396 KB
testcase_14 AC 482 ms
144,652 KB
testcase_15 AC 293 ms
100,448 KB
testcase_16 AC 325 ms
105,936 KB
testcase_17 AC 426 ms
127,220 KB
testcase_18 AC 183 ms
81,648 KB
testcase_19 AC 349 ms
109,512 KB
testcase_20 AC 382 ms
122,180 KB
testcase_21 AC 347 ms
115,428 KB
testcase_22 AC 161 ms
81,200 KB
testcase_23 AC 383 ms
119,100 KB
testcase_24 AC 250 ms
90,908 KB
testcase_25 AC 346 ms
109,504 KB
testcase_26 AC 431 ms
130,976 KB
testcase_27 AC 284 ms
99,380 KB
testcase_28 AC 464 ms
143,180 KB
testcase_29 AC 434 ms
130,752 KB
testcase_30 AC 214 ms
84,456 KB
testcase_31 AC 431 ms
119,616 KB
testcase_32 AC 408 ms
114,772 KB
testcase_33 AC 332 ms
102,908 KB
testcase_34 AC 359 ms
108,844 KB
testcase_35 AC 342 ms
103,444 KB
testcase_36 AC 223 ms
84,688 KB
testcase_37 AC 250 ms
88,172 KB
testcase_38 AC 415 ms
116,504 KB
testcase_39 AC 299 ms
95,492 KB
testcase_40 AC 289 ms
95,040 KB
testcase_41 AC 394 ms
111,056 KB
testcase_42 AC 320 ms
97,736 KB
testcase_43 AC 322 ms
97,700 KB
testcase_44 AC 313 ms
98,340 KB
testcase_45 AC 284 ms
93,392 KB
testcase_46 AC 218 ms
85,412 KB
testcase_47 AC 196 ms
82,972 KB
testcase_48 AC 402 ms
116,572 KB
testcase_49 AC 153 ms
80,288 KB
testcase_50 AC 86 ms
71,672 KB
testcase_51 AC 88 ms
71,688 KB
testcase_52 AC 558 ms
153,300 KB
testcase_53 AC 588 ms
155,052 KB
07_evil_01.txt AC 923 ms
232,644 KB
07_evil_02.txt AC 1,280 ms
260,488 KB
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ソースコード

diff # 

from collections import defaultdict
import sys
from collections import defaultdict, Counter, deque
from itertools import permutations, combinations, product, combinations_with_replacement, groupby, accumulate
import operator
from math import sqrt, gcd, factorial
# from math import isqrt, prod, comb  #python3.8用(notpypy)
#from bisect import bisect_left, bisect_right
#from functools import lru_cache, reduce
#from heapq import heappush, heappop, heapify, heappushpop, heapreplace
#import numpy as np
#import networkx as nx
#from networkx.utils import UnionFind
#from numba import njit, b1, i1, i4, i8, f8
# numba例 @njit(i1(i4[:], i8[:, :]),cache=True) 引数i4配列、i8 2次元配列,戻り値i1
#from scipy.sparse import csr_matrix
#from scipy.sparse.csgraph import shortest_path, floyd_warshall, dijkstra, bellman_ford, johnson, NegativeCycleError, maximum_bipartite_matching, maximum_flow, minimum_spanning_tree
def input(): return sys.stdin.readline().rstrip()
def divceil(n, k): return 1+(n-1)//k  # n/kの切り上げを返す
def yn(hantei, yes='Yes', no='No'): print(yes if hantei else no)


# https://note.nkmk.me/python-union-find/から一部改変


class UnionFind():
    def __init__(self, n):
        self.n = n
        self.parents = [-1] * n
        self.group_num = n
        self.check = [0]*n

    def find(self, x):
        if self.parents[x] < 0:
            return x
        else:
            self.parents[x] = self.find(self.parents[x])
            return self.parents[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)

        if x == y:
            return

        self.group_num -= 1
        if self.parents[x] > self.parents[y]:
            x, y = y, x

        self.parents[x] += self.parents[y]
        self.parents[y] = x
        self.check[x] |= self.check[y]

    def size(self, x):
        return -self.parents[self.find(x)]

    def same(self, x, y):
        return self.find(x) == self.find(y)

    def members(self, x):
        root = self.find(x)
        return [i for i in range(self.n) if self.find(i) == root]

    def roots(self):
        return [i for i, x in enumerate(self.parents) if x < 0]

    def group_count(self):
        return self.group_num

    def all_group_members(self):
        self.all_group_member = defaultdict(list)
        for i in range(self.n):
            self.all_group_member[self.find(i)].append(i)
        return self.all_group_member

    def __str__(self):
        return '\n'.join('{}: {}'.format(r, self.members(r)) for r in self.roots())


def main():
    mod = 10**9+7
    mod2 = 998244353
    n = int(input())
    uf = UnionFind(n)
    ab = [list(map(lambda x: int(x)-1, input().split())) for i in range(n)]
    ans = [None]*n
    left = []
    edges = [[] for i in range(n)]
    for i, (a, b) in enumerate(ab):
        if uf.same(a, b):
            if uf.check[uf.find(a)]:
                yn(0)
                return
            uf.check[uf.find(a)] = 1
            left.append(a)
            ans[i] = a+1
        else:
            uf.union(a, b)
            edges[b].append([a, i])
            edges[a].append([b, i])
    if 0 != 0:
        pass
    else:
        #yn(1)
        d = deque()
        dist = [-1]*n
        for l in left:
            d.append(l)
            dist[l] = 0
        while d:
            v = d.popleft()
            for i, edgenum in edges[v]:
                if dist[i] != -1:
                    continue
                dist[i] = dist[v] + 1
                ans[edgenum] = i+1
                d.append(i)
        if set(ans)==set(range(1,n+1)):
            yn(1)
            print(*ans, sep="\n")
        else:
            yn(0)


if __name__ == '__main__':
    main()
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