結果

問題 No.1640 簡単な色塗り
ユーザー ansainansain
提出日時 2021-08-06 22:42:38
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 573 ms / 2,000 ms
コード長 3,716 bytes
コンパイル時間 325 ms
コンパイル使用メモリ 82,476 KB
実行使用メモリ 152,288 KB
最終ジャッジ日時 2024-06-29 15:44:50
合計ジャッジ時間 24,837 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge2
このコードへのチャレンジ
（要ログイン）

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 44 ms
54,888 KB
testcase_01 AC 41 ms
54,432 KB
testcase_02 AC 41 ms
54,784 KB
testcase_03 AC 41 ms
54,656 KB
testcase_04 AC 190 ms
133,340 KB
testcase_05 AC 230 ms
149,948 KB
testcase_06 AC 41 ms
54,528 KB
testcase_07 AC 41 ms
54,784 KB
testcase_08 AC 41 ms
54,912 KB
testcase_09 AC 40 ms
54,776 KB
testcase_10 AC 371 ms
122,260 KB
testcase_11 AC 333 ms
113,660 KB
testcase_12 AC 303 ms
107,120 KB
testcase_13 AC 468 ms
143,648 KB
testcase_14 AC 477 ms
143,628 KB
testcase_15 AC 260 ms
98,556 KB
testcase_16 AC 299 ms
104,320 KB
testcase_17 AC 419 ms
133,824 KB
testcase_18 AC 142 ms
80,000 KB
testcase_19 AC 294 ms
107,124 KB
testcase_20 AC 358 ms
119,100 KB
testcase_21 AC 328 ms
113,288 KB
testcase_22 AC 125 ms
79,656 KB
testcase_23 AC 375 ms
123,356 KB
testcase_24 AC 211 ms
88,848 KB
testcase_25 AC 314 ms
107,676 KB
testcase_26 AC 408 ms
127,860 KB
testcase_27 AC 251 ms
94,716 KB
testcase_28 AC 469 ms
142,168 KB
testcase_29 AC 394 ms
127,856 KB
testcase_30 AC 171 ms
83,456 KB
testcase_31 AC 407 ms
117,336 KB
testcase_32 AC 363 ms
111,908 KB
testcase_33 AC 304 ms
101,364 KB
testcase_34 AC 346 ms
106,860 KB
testcase_35 AC 308 ms
101,532 KB
testcase_36 AC 180 ms
83,072 KB
testcase_37 AC 199 ms
86,736 KB
testcase_38 AC 388 ms
114,000 KB
testcase_39 AC 251 ms
93,284 KB
testcase_40 AC 244 ms
92,912 KB
testcase_41 AC 355 ms
108,268 KB
testcase_42 AC 275 ms
95,980 KB
testcase_43 AC 271 ms
96,920 KB
testcase_44 AC 281 ms
96,556 KB
testcase_45 AC 241 ms
91,916 KB
testcase_46 AC 177 ms
83,584 KB
testcase_47 AC 157 ms
81,692 KB
testcase_48 AC 387 ms
114,268 KB
testcase_49 AC 110 ms
78,336 KB
testcase_50 AC 42 ms
54,528 KB
testcase_51 AC 41 ms
54,400 KB
testcase_52 AC 568 ms
152,288 KB
testcase_53 AC 573 ms
151,972 KB
07_evil_01.txt AC 953 ms
231,132 KB
07_evil_02.txt AC 1,361 ms
265,464 KB
権限があれば一括ダウンロードができます

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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