답안 #241707

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
241707	2020-06-25T09:50:10 Z	atoiz	철인 이종 경기 (APIO18_duathlon)	C++14	49 / 100	49 ms	15608 KB

count_triplets

#include <stdio.h>

#define N 100007
#define M 400007
int n, m, to[M], nx[M], st[N], low[N], vis[N], ts, stk[N], instack[N], *top = &stk[0];
int bto[N * 4], bnx[N * 4], bst[N * 2], b, bm, bsz[N * 2];
long long ans = 0;

inline void minimize(int &i, int j) { (i > j ? i = j : 0); }

void build(int u, int p)
{
	low[u] = vis[u] = ++ts;
	instack[*(++top) = u] = 1;

	int i, v, w, c = 0;
	for (i = st[u]; i; i = nx[i]) if (to[i] != p) {
		v = to[i];
		if (!vis[v]) {
			++c;
			build(v, u);
			if (low[v] >= vis[u]) {
				++b;
				bool cont = true;
				while (cont) {
					instack[w = (*top--)] = 0;
					cont = (w != v);
					++bm, bnx[bm] = bst[w], bto[bst[w] = bm] = b;
					++bm, bnx[bm] = bst[b], bto[bst[b] = bm] = w;
				}
				++bm, bnx[bm] = bst[b], bto[bst[b] = bm] = u;
				++bm, bnx[bm] = bst[u], bto[bst[u] = bm] = b;
			}
			minimize(low[u], low[v]);
		} else if (instack[v]) {
			minimize(low[u], vis[v]);
		}
	}
}

void solve(int u, int p)
{
	int i, v, d = 0;
	long long x = 0;

	bsz[u] = (u <= n);
	for (i = bst[u]; i; i = bnx[i]) if (bto[i] != p) {
		solve(v = bto[i], u), bsz[u] += bsz[v], ++d;
		x += (long long) bsz[v] * (bsz[v] - 1);
	}

	if (u > n) {
		x += (long long) (ts - bsz[u]) * (ts - bsz[u] - 1);
		ans -= x * d;
	}
}

int main()
{
	int i, u, v;
	scanf("%d %d", &n, &m);
	for (i = 1; i <= m; ++i) {
		scanf("%d %d", &u, &v);
		nx[i * 2] = st[u], to[st[u] = i * 2] = v;
		nx[i * 2 - 1] = st[v], to[st[v] = i * 2 - 1] = u;
	}

	b = n;
	for (i = 1; i <= n; ++i) if (!vis[i]) {
		ts = 0;
		build(i, 0);
		ans += (int) ts * (ts - 1) * (ts - 2);
		solve(i, 0);
	}
	printf("%lld", ans);
}

Compilation message

count_triplets.cpp: In function 'int main()':
count_triplets.cpp:61:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
count_triplets.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &u, &v);
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1

5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	4 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	4 ms	384 KB	Output is correct
16	Correct	4 ms	384 KB	Output is correct
17	Correct	4 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	4 ms	380 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	4 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	4 ms	384 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	4 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	4 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct

Subtask #2

11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	4 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	4 ms	384 KB	Output is correct
16	Correct	4 ms	384 KB	Output is correct
17	Correct	4 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	4 ms	380 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	4 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	4 ms	384 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	4 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	4 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct
36	Correct	5 ms	384 KB	Output is correct
37	Correct	5 ms	384 KB	Output is correct
38	Correct	5 ms	384 KB	Output is correct
39	Correct	4 ms	384 KB	Output is correct
40	Correct	5 ms	384 KB	Output is correct
41	Correct	4 ms	384 KB	Output is correct
42	Correct	5 ms	384 KB	Output is correct
43	Correct	5 ms	384 KB	Output is correct
44	Correct	6 ms	384 KB	Output is correct
45	Correct	6 ms	384 KB	Output is correct
46	Correct	5 ms	384 KB	Output is correct
47	Correct	5 ms	384 KB	Output is correct
48	Correct	5 ms	384 KB	Output is correct
49	Correct	5 ms	384 KB	Output is correct
50	Correct	5 ms	384 KB	Output is correct
51	Correct	5 ms	384 KB	Output is correct
52	Correct	4 ms	384 KB	Output is correct
53	Correct	5 ms	384 KB	Output is correct
54	Correct	4 ms	384 KB	Output is correct
55	Correct	4 ms	384 KB	Output is correct
56	Correct	5 ms	384 KB	Output is correct
57	Correct	5 ms	384 KB	Output is correct
58	Correct	5 ms	384 KB	Output is correct
59	Correct	4 ms	384 KB	Output is correct
60	Correct	4 ms	384 KB	Output is correct
61	Correct	4 ms	384 KB	Output is correct
62	Correct	5 ms	384 KB	Output is correct
63	Correct	5 ms	384 KB	Output is correct
64	Correct	4 ms	384 KB	Output is correct
65	Correct	4 ms	384 KB	Output is correct

Subtask #3

0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	49 ms	15608 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	512 KB	Output is correct
5	Correct	5 ms	512 KB	Output is correct
6	Correct	5 ms	512 KB	Output is correct
7	Correct	5 ms	512 KB	Output is correct
8	Correct	5 ms	512 KB	Output is correct
9	Correct	5 ms	512 KB	Output is correct
10	Correct	5 ms	512 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	512 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	512 KB	Output is correct
18	Correct	5 ms	512 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct

Subtask #5

0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	47 ms	8184 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #6

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	512 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	512 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	512 KB	Output is correct
12	Correct	5 ms	512 KB	Output is correct
13	Correct	5 ms	512 KB	Output is correct
14	Correct	5 ms	512 KB	Output is correct
15	Correct	5 ms	512 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	6 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	5 ms	388 KB	Output is correct

Subtask #7

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	47 ms	8184 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8

8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	4 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	4 ms	384 KB	Output is correct
16	Correct	4 ms	384 KB	Output is correct
17	Correct	4 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	4 ms	380 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	4 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	4 ms	384 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	4 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	4 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct
36	Correct	5 ms	384 KB	Output is correct
37	Correct	5 ms	384 KB	Output is correct
38	Correct	5 ms	384 KB	Output is correct
39	Correct	4 ms	384 KB	Output is correct
40	Correct	5 ms	384 KB	Output is correct
41	Correct	4 ms	384 KB	Output is correct
42	Correct	5 ms	384 KB	Output is correct
43	Correct	5 ms	384 KB	Output is correct
44	Correct	6 ms	384 KB	Output is correct
45	Correct	6 ms	384 KB	Output is correct
46	Correct	5 ms	384 KB	Output is correct
47	Correct	5 ms	384 KB	Output is correct
48	Correct	5 ms	384 KB	Output is correct
49	Correct	5 ms	384 KB	Output is correct
50	Correct	5 ms	384 KB	Output is correct
51	Correct	5 ms	384 KB	Output is correct
52	Correct	4 ms	384 KB	Output is correct
53	Correct	5 ms	384 KB	Output is correct
54	Correct	4 ms	384 KB	Output is correct
55	Correct	4 ms	384 KB	Output is correct
56	Correct	5 ms	384 KB	Output is correct
57	Correct	5 ms	384 KB	Output is correct
58	Correct	5 ms	384 KB	Output is correct
59	Correct	4 ms	384 KB	Output is correct
60	Correct	4 ms	384 KB	Output is correct
61	Correct	4 ms	384 KB	Output is correct
62	Correct	5 ms	384 KB	Output is correct
63	Correct	5 ms	384 KB	Output is correct
64	Correct	4 ms	384 KB	Output is correct
65	Correct	4 ms	384 KB	Output is correct
66	Correct	5 ms	384 KB	Output is correct
67	Correct	5 ms	384 KB	Output is correct
68	Correct	5 ms	512 KB	Output is correct
69	Correct	5 ms	512 KB	Output is correct
70	Correct	5 ms	512 KB	Output is correct
71	Correct	5 ms	384 KB	Output is correct
72	Correct	5 ms	384 KB	Output is correct
73	Correct	5 ms	384 KB	Output is correct
74	Correct	5 ms	384 KB	Output is correct
75	Correct	5 ms	384 KB	Output is correct
76	Correct	5 ms	384 KB	Output is correct
77	Correct	5 ms	384 KB	Output is correct
78	Correct	5 ms	384 KB	Output is correct
79	Correct	5 ms	384 KB	Output is correct
80	Correct	5 ms	384 KB	Output is correct
81	Correct	5 ms	512 KB	Output is correct
82	Correct	5 ms	512 KB	Output is correct
83	Correct	5 ms	512 KB	Output is correct
84	Correct	5 ms	512 KB	Output is correct
85	Correct	5 ms	512 KB	Output is correct
86	Correct	5 ms	384 KB	Output is correct
87	Correct	5 ms	512 KB	Output is correct
88	Correct	5 ms	384 KB	Output is correct
89	Correct	5 ms	512 KB	Output is correct
90	Correct	5 ms	512 KB	Output is correct
91	Correct	5 ms	384 KB	Output is correct
92	Correct	5 ms	384 KB	Output is correct

Subtask #9

0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	4 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	4 ms	384 KB	Output is correct
16	Correct	4 ms	384 KB	Output is correct
17	Correct	4 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	4 ms	380 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	4 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	4 ms	384 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	4 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	4 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct
36	Correct	5 ms	384 KB	Output is correct
37	Correct	5 ms	384 KB	Output is correct
38	Correct	5 ms	384 KB	Output is correct
39	Correct	4 ms	384 KB	Output is correct
40	Correct	5 ms	384 KB	Output is correct
41	Correct	4 ms	384 KB	Output is correct
42	Correct	5 ms	384 KB	Output is correct
43	Correct	5 ms	384 KB	Output is correct
44	Correct	6 ms	384 KB	Output is correct
45	Correct	6 ms	384 KB	Output is correct
46	Correct	5 ms	384 KB	Output is correct
47	Correct	5 ms	384 KB	Output is correct
48	Correct	5 ms	384 KB	Output is correct
49	Correct	5 ms	384 KB	Output is correct
50	Correct	5 ms	384 KB	Output is correct
51	Correct	5 ms	384 KB	Output is correct
52	Correct	4 ms	384 KB	Output is correct
53	Correct	5 ms	384 KB	Output is correct
54	Correct	4 ms	384 KB	Output is correct
55	Correct	4 ms	384 KB	Output is correct
56	Correct	5 ms	384 KB	Output is correct
57	Correct	5 ms	384 KB	Output is correct
58	Correct	5 ms	384 KB	Output is correct
59	Correct	4 ms	384 KB	Output is correct
60	Correct	4 ms	384 KB	Output is correct
61	Correct	4 ms	384 KB	Output is correct
62	Correct	5 ms	384 KB	Output is correct
63	Correct	5 ms	384 KB	Output is correct
64	Correct	4 ms	384 KB	Output is correct
65	Correct	4 ms	384 KB	Output is correct
66	Incorrect	49 ms	15608 KB	Output isn't correct
67	Halted	0 ms	0 KB	-