답안 #469948

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
469948	2021-09-02T11:44:57 Z	1bin	산만한 고양이 (KOI17_cat)	C++14	100 / 100	371 ms	60520 KB

#include <bits/stdc++.h>
#include <cassert>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 3e5 + 5;
ll n, m, a, b, dfsn[NMAX], cnt[NMAX], x[NMAX], y[NMAX], t, ans, sum;
vector<int> adj[NMAX];

void dfs(int now, int bef) {
	dfsn[now] = ++t;

	int f = 1;
	for (int nx : adj[now]) {
		if (nx == bef) continue;
		if (!dfsn[nx]) {
			ll c = cnt[now];
			dfs(nx, now);
			cnt[now] += cnt[nx];
			if (cnt[now] - c > 1) f = 0;
			x[now] += x[nx]; y[now] += y[nx];
		}
		else if (dfsn[nx] < dfsn[now]) x[now]++, cnt[now]++, cnt[nx]--;
		else y[bef]++;
	}
	if (!y[now] && !(sum - x[now]) && f) ans += now;
	return;
}

int main(void) {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

	cin >> n >> m;
	sum = m - (n - 1);
	assert(sum > 0);
	while (m--) {
		cin >> a >> b;
		adj[a].emplace_back(b);
		adj[b].emplace_back(a);
	}
	dfs(1, 0);
	cout << ans;
	return 0;
}

Subtask #1
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7372 KB	Output is correct
2	Correct	4 ms	7372 KB	Output is correct
3	Correct	5 ms	7372 KB	Output is correct
4	Correct	5 ms	7368 KB	Output is correct
5	Correct	7 ms	7884 KB	Output is correct
6	Correct	6 ms	7764 KB	Output is correct
7	Correct	7 ms	8012 KB	Output is correct
8	Correct	7 ms	7756 KB	Output is correct
9	Correct	6 ms	8268 KB	Output is correct
10	Correct	6 ms	8012 KB	Output is correct
11	Correct	6 ms	8140 KB	Output is correct
12	Correct	6 ms	8140 KB	Output is correct
13	Correct	6 ms	7884 KB	Output is correct
14	Correct	7 ms	7884 KB	Output is correct
15	Correct	5 ms	7372 KB	Output is correct
16	Correct	4 ms	7372 KB	Output is correct
17	Correct	5 ms	7372 KB	Output is correct
18	Correct	5 ms	7372 KB	Output is correct
19	Correct	5 ms	7372 KB	Output is correct
20	Correct	8 ms	8124 KB	Output is correct
21	Correct	8 ms	8140 KB	Output is correct
22	Correct	7 ms	8140 KB	Output is correct
23	Correct	7 ms	7628 KB	Output is correct
24	Correct	6 ms	7628 KB	Output is correct
25	Correct	5 ms	7372 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	244 ms	26780 KB	Output is correct
2	Correct	263 ms	26788 KB	Output is correct
3	Correct	298 ms	26780 KB	Output is correct
4	Correct	255 ms	26948 KB	Output is correct
5	Correct	268 ms	26784 KB	Output is correct
6	Correct	282 ms	26844 KB	Output is correct
7	Correct	266 ms	26752 KB	Output is correct
8	Correct	264 ms	26800 KB	Output is correct
9	Correct	275 ms	26920 KB	Output is correct
10	Correct	270 ms	26944 KB	Output is correct
11	Correct	254 ms	27552 KB	Output is correct
12	Correct	268 ms	27576 KB	Output is correct
13	Correct	264 ms	27408 KB	Output is correct
14	Correct	273 ms	27652 KB	Output is correct
15	Correct	260 ms	27640 KB	Output is correct
16	Correct	237 ms	33992 KB	Output is correct
17	Correct	254 ms	35392 KB	Output is correct
18	Correct	247 ms	32372 KB	Output is correct
19	Correct	271 ms	33952 KB	Output is correct
20	Correct	243 ms	32592 KB	Output is correct
21	Correct	275 ms	30176 KB	Output is correct
22	Correct	254 ms	42564 KB	Output is correct
23	Correct	221 ms	46616 KB	Output is correct
24	Correct	245 ms	30672 KB	Output is correct
25	Correct	232 ms	45100 KB	Output is correct
26	Correct	130 ms	59204 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	130 ms	59232 KB	Output is correct
2	Correct	129 ms	59272 KB	Output is correct
3	Correct	125 ms	59248 KB	Output is correct
4	Correct	123 ms	59220 KB	Output is correct
5	Correct	127 ms	59204 KB	Output is correct
6	Correct	127 ms	59248 KB	Output is correct
7	Correct	127 ms	59424 KB	Output is correct
8	Correct	140 ms	59220 KB	Output is correct
9	Correct	132 ms	59292 KB	Output is correct
10	Correct	137 ms	51040 KB	Output is correct
11	Correct	138 ms	51036 KB	Output is correct
12	Correct	140 ms	51052 KB	Output is correct
13	Correct	135 ms	51008 KB	Output is correct
14	Correct	140 ms	51012 KB	Output is correct
15	Correct	144 ms	42588 KB	Output is correct
16	Correct	153 ms	42532 KB	Output is correct
17	Correct	147 ms	42620 KB	Output is correct
18	Correct	145 ms	42636 KB	Output is correct
19	Correct	140 ms	42516 KB	Output is correct

Subtask #4
55.0 / 55.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7372 KB	Output is correct
2	Correct	4 ms	7372 KB	Output is correct
3	Correct	5 ms	7372 KB	Output is correct
4	Correct	5 ms	7368 KB	Output is correct
5	Correct	7 ms	7884 KB	Output is correct
6	Correct	6 ms	7764 KB	Output is correct
7	Correct	7 ms	8012 KB	Output is correct
8	Correct	7 ms	7756 KB	Output is correct
9	Correct	6 ms	8268 KB	Output is correct
10	Correct	6 ms	8012 KB	Output is correct
11	Correct	6 ms	8140 KB	Output is correct
12	Correct	6 ms	8140 KB	Output is correct
13	Correct	6 ms	7884 KB	Output is correct
14	Correct	7 ms	7884 KB	Output is correct
15	Correct	5 ms	7372 KB	Output is correct
16	Correct	4 ms	7372 KB	Output is correct
17	Correct	5 ms	7372 KB	Output is correct
18	Correct	5 ms	7372 KB	Output is correct
19	Correct	5 ms	7372 KB	Output is correct
20	Correct	8 ms	8124 KB	Output is correct
21	Correct	8 ms	8140 KB	Output is correct
22	Correct	7 ms	8140 KB	Output is correct
23	Correct	7 ms	7628 KB	Output is correct
24	Correct	6 ms	7628 KB	Output is correct
25	Correct	5 ms	7372 KB	Output is correct
26	Correct	244 ms	26780 KB	Output is correct
27	Correct	263 ms	26788 KB	Output is correct
28	Correct	298 ms	26780 KB	Output is correct
29	Correct	255 ms	26948 KB	Output is correct
30	Correct	268 ms	26784 KB	Output is correct
31	Correct	282 ms	26844 KB	Output is correct
32	Correct	266 ms	26752 KB	Output is correct
33	Correct	264 ms	26800 KB	Output is correct
34	Correct	275 ms	26920 KB	Output is correct
35	Correct	270 ms	26944 KB	Output is correct
36	Correct	254 ms	27552 KB	Output is correct
37	Correct	268 ms	27576 KB	Output is correct
38	Correct	264 ms	27408 KB	Output is correct
39	Correct	273 ms	27652 KB	Output is correct
40	Correct	260 ms	27640 KB	Output is correct
41	Correct	237 ms	33992 KB	Output is correct
42	Correct	254 ms	35392 KB	Output is correct
43	Correct	247 ms	32372 KB	Output is correct
44	Correct	271 ms	33952 KB	Output is correct
45	Correct	243 ms	32592 KB	Output is correct
46	Correct	275 ms	30176 KB	Output is correct
47	Correct	254 ms	42564 KB	Output is correct
48	Correct	221 ms	46616 KB	Output is correct
49	Correct	245 ms	30672 KB	Output is correct
50	Correct	232 ms	45100 KB	Output is correct
51	Correct	130 ms	59204 KB	Output is correct
52	Correct	130 ms	59232 KB	Output is correct
53	Correct	129 ms	59272 KB	Output is correct
54	Correct	125 ms	59248 KB	Output is correct
55	Correct	123 ms	59220 KB	Output is correct
56	Correct	127 ms	59204 KB	Output is correct
57	Correct	127 ms	59248 KB	Output is correct
58	Correct	127 ms	59424 KB	Output is correct
59	Correct	140 ms	59220 KB	Output is correct
60	Correct	132 ms	59292 KB	Output is correct
61	Correct	137 ms	51040 KB	Output is correct
62	Correct	138 ms	51036 KB	Output is correct
63	Correct	140 ms	51052 KB	Output is correct
64	Correct	135 ms	51008 KB	Output is correct
65	Correct	140 ms	51012 KB	Output is correct
66	Correct	144 ms	42588 KB	Output is correct
67	Correct	153 ms	42532 KB	Output is correct
68	Correct	147 ms	42620 KB	Output is correct
69	Correct	145 ms	42636 KB	Output is correct
70	Correct	140 ms	42516 KB	Output is correct
71	Correct	331 ms	60520 KB	Output is correct
72	Correct	302 ms	57904 KB	Output is correct
73	Correct	330 ms	56856 KB	Output is correct
74	Correct	347 ms	59628 KB	Output is correct
75	Correct	330 ms	55068 KB	Output is correct
76	Correct	318 ms	54764 KB	Output is correct
77	Correct	310 ms	47892 KB	Output is correct
78	Correct	315 ms	47484 KB	Output is correct
79	Correct	296 ms	60232 KB	Output is correct
80	Correct	339 ms	54480 KB	Output is correct
81	Correct	280 ms	49944 KB	Output is correct
82	Correct	371 ms	59996 KB	Output is correct
83	Correct	290 ms	60128 KB	Output is correct
84	Correct	298 ms	58124 KB	Output is correct
85	Correct	278 ms	59416 KB	Output is correct
86	Correct	214 ms	49880 KB	Output is correct
87	Correct	199 ms	48888 KB	Output is correct
88	Correct	147 ms	23972 KB	Output is correct
89	Correct	152 ms	24336 KB	Output is correct
90	Correct	156 ms	24332 KB	Output is correct

답안 #469948

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 23.0 / 23.0

Subtask #4 55.0 / 55.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
23.0 / 23.0

Subtask #4
55.0 / 55.0