結果

問題 No.1640 簡単な色塗り
ユーザー NatsubiSoganNatsubiSogan
提出日時 2021-08-06 22:55:56
言語 Python3
(3.12.2 + numpy 1.26.4 + scipy 1.12.0)
結果
AC  
実行時間 1,545 ms / 2,000 ms
コード長 2,377 bytes
コンパイル時間 97 ms
コンパイル使用メモリ 11,228 KB
実行使用メモリ 106,344 KB
最終ジャッジ日時 2023-09-12 03:04:04
合計ジャッジ時間 44,555 ms
ジャッジサーバーID
(参考情報)
judge15 / judge13
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 20 ms
8,788 KB
testcase_01 AC 19 ms
8,788 KB
testcase_02 AC 20 ms
8,780 KB
testcase_03 AC 20 ms
8,852 KB
testcase_04 AC 787 ms
85,876 KB
testcase_05 AC 977 ms
106,344 KB
testcase_06 AC 19 ms
8,860 KB
testcase_07 AC 18 ms
8,912 KB
testcase_08 AC 19 ms
8,860 KB
testcase_09 AC 18 ms
8,924 KB
testcase_10 AC 725 ms
50,328 KB
testcase_11 AC 583 ms
44,396 KB
testcase_12 AC 485 ms
37,636 KB
testcase_13 AC 1,083 ms
76,944 KB
testcase_14 AC 1,168 ms
76,684 KB
testcase_15 AC 350 ms
31,208 KB
testcase_16 AC 497 ms
34,668 KB
testcase_17 AC 876 ms
58,932 KB
testcase_18 AC 79 ms
13,684 KB
testcase_19 AC 492 ms
37,464 KB
testcase_20 AC 677 ms
49,280 KB
testcase_21 AC 530 ms
43,652 KB
testcase_22 AC 61 ms
11,812 KB
testcase_23 AC 774 ms
51,532 KB
testcase_24 AC 188 ms
20,032 KB
testcase_25 AC 470 ms
37,728 KB
testcase_26 AC 833 ms
55,228 KB
testcase_27 AC 351 ms
30,308 KB
testcase_28 AC 1,083 ms
69,060 KB
testcase_29 AC 826 ms
54,764 KB
testcase_30 AC 178 ms
19,956 KB
testcase_31 AC 1,513 ms
96,976 KB
testcase_32 AC 1,142 ms
75,464 KB
testcase_33 AC 748 ms
57,720 KB
testcase_34 AC 932 ms
73,040 KB
testcase_35 AC 708 ms
60,048 KB
testcase_36 AC 168 ms
20,432 KB
testcase_37 AC 208 ms
26,016 KB
testcase_38 AC 1,260 ms
82,332 KB
testcase_39 AC 442 ms
39,288 KB
testcase_40 AC 475 ms
37,072 KB
testcase_41 AC 962 ms
65,940 KB
testcase_42 AC 509 ms
44,388 KB
testcase_43 AC 552 ms
49,256 KB
testcase_44 AC 517 ms
48,540 KB
testcase_45 AC 412 ms
37,472 KB
testcase_46 AC 174 ms
22,404 KB
testcase_47 AC 110 ms
17,568 KB
testcase_48 AC 1,245 ms
91,236 KB
testcase_49 AC 55 ms
12,108 KB
testcase_50 AC 19 ms
8,912 KB
testcase_51 AC 18 ms
8,924 KB
testcase_52 AC 1,545 ms
93,236 KB
testcase_53 AC 1,488 ms
93,348 KB
07_evil_01.txt TLE -
07_evil_02.txt TLE -
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 #

import sys
sys.setrecursionlimit(10 ** 7)
input = sys.stdin.buffer.readline
#Union-Find
class UnionFind():
    def __init__(self, n: int) -> None:
        self.n = n
        self.par = list(range(self.n))
        self.rank = [1] * self.n

    def find(self, x: int) -> int:
        if self.par[x] == x:
            return x
        else:
            self.par[x] = self.find(self.par[x])
            return self.par[x]

    def unite(self, x: int, y: int) -> None:
        p = self.find(x)
        q = self.find(y)
        if p == q:
            return None
        if p > q:
            p, q = q, p
        self.rank[p] += self.rank[q]
        self.par[q] = p

    def same(self, x: int, y: int) -> bool:
        return self.find(x) == self.find(y)

    def size(self, x: int) -> int:
        return self.rank[x]
def main():
    n = int(input())
    G = [[] for i in range(n)]
    UF = UnionFind(n)
    from collections import defaultdict
    ed_ind = defaultdict(list)
    for i in range(n):
        a, b = map(int, input().split())
        if a > b: a, b = b, a
        G[a - 1].append(b - 1)
        G[b - 1].append(a - 1)
        UF.unite(a - 1, b - 1)
        ed_ind[(a - 1, b - 1)].append(i)
    done = [0] * n
    visit = [0] * n
    used = defaultdict(int)
    def dfs(v):
        visit[v] = 1
        for u in G[v]:
            if not visit[u]: 
                dfs(u)
                used[(min(u, v), max(u, v))] += 1
    for i in range(n):
        dfs(i)
    def dfs2(v):
        for u in G[v]:
            if used[(min(u, v), max(u, v))] > 0:
                for i in ed_ind[(min(u, v), max(u, v))]:
                    if ans[i] == 0:
                        ans[i] = u + 1
                        dfs2(u)
                        break
    ans = [0] * n
    for i in range(n):
        if not done[UF.find(i)]:
            for v in G[i]:
                if used[(min(v, i), max(v, i))] < len(ed_ind[(min(v, i), max(v, i))]):
                    for x in ed_ind[(min(v, i), max(v, i))]:
                        if ans[x] == 0: 
                            ans[x] = i + 1
                            dfs2(i)
                            break
                    done[UF.find(i)] = 1
                    break
    if any(i == 0 for i in ans) or len(set(ans)) != n: exit(print("No"))
    print("Yes")
    print(*ans, sep="\n")
if __name__ == '__main__':
    main()
    
0