답안 #577205

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
577205	2022-06-14T09:22:02 Z	eecs	Mountains and Valleys (CCO20_day1problem3)	C++17	11 / 25	7000 ms	197012 KB

Main

#include <bits/stdc++.h>
using namespace std;

const int maxn = 5010;
int n, m, d[maxn][maxn], par[maxn][maxn];
vector<int> G[maxn];

int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    cin >> n >> m;
    assert(n <= 5000 && m <= 10000);
    vector<array<int, 3>> E;
    while (m--) {
        int u, v, w;
        cin >> u >> v >> w;
        if (w == 1) G[u].push_back(v), G[v].push_back(u);
        else if (w < (n + 1) / 2) E.push_back({u, v, w});
    }
    int diam = 0;
    for (int i = 0; i < n; i++) {
        auto dfs = [&](auto self, int u, int fa) -> void {
            diam = max(diam, d[i][u]), par[i][u] = fa;
            for (int v : G[u]) if (v ^ fa) {
                d[i][v] = d[i][u] + 1, self(self, v, u);
            }
        };
        dfs(dfs, i, -1);
    }
    int ans = 2 * (n - 1) - diam;
    for (auto &e : E) {
        int u = e[0], v = e[1], mn = INT_MAX;
        for (int i = 0; i < n; i++) if (i ^ u) {
            for (int j = 0; j < n; j++) if (j ^ v) {
                int cnt = 0;
                for (int k = 0; k < n; k++) {
                    if (d[u][k] + d[k][i] == d[u][i] && d[v][k] + d[k][j] == d[v][j]) cnt++;
                }
                mn = min(mn, 2 * (n + cnt - 2) - d[u][i] - d[v][j]);
            }
        }
        ans = min(ans, mn + e[2]);
    }
    cout << ans << "\n";
    return 0;
}

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct

Subtask #2
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	468 KB	Output is correct
18	Correct	0 ms	468 KB	Output is correct
19	Correct	1 ms	544 KB	Output is correct
20	Correct	1 ms	572 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	1 ms	576 KB	Output is correct
26	Correct	1 ms	568 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	1 ms	572 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	444 KB	Output is correct
34	Correct	1 ms	596 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct

Subtask #3
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	823 ms	196908 KB	Output is correct
2	Correct	866 ms	197012 KB	Output is correct
3	Correct	779 ms	196860 KB	Output is correct
4	Correct	795 ms	196764 KB	Output is correct
5	Correct	785 ms	196768 KB	Output is correct
6	Correct	396 ms	196764 KB	Output is correct
7	Correct	799 ms	196804 KB	Output is correct
8	Correct	848 ms	196788 KB	Output is correct
9	Correct	815 ms	197004 KB	Output is correct
10	Correct	780 ms	196776 KB	Output is correct
11	Correct	795 ms	196776 KB	Output is correct
12	Correct	778 ms	196444 KB	Output is correct
13	Correct	817 ms	196620 KB	Output is correct
14	Correct	780 ms	196736 KB	Output is correct

Subtask #4
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	468 KB	Output is correct
18	Correct	0 ms	468 KB	Output is correct
19	Correct	1 ms	544 KB	Output is correct
20	Correct	1 ms	572 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	1 ms	576 KB	Output is correct
26	Correct	1 ms	568 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	1 ms	572 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	444 KB	Output is correct
34	Correct	1 ms	596 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	122 ms	1316 KB	Output is correct
37	Correct	96 ms	1236 KB	Output is correct
38	Correct	127 ms	1312 KB	Output is correct
39	Correct	134 ms	1300 KB	Output is correct
40	Correct	132 ms	1300 KB	Output is correct
41	Correct	52 ms	1316 KB	Output is correct
42	Correct	111 ms	1236 KB	Output is correct
43	Correct	134 ms	1304 KB	Output is correct
44	Correct	117 ms	1300 KB	Output is correct
45	Correct	128 ms	1276 KB	Output is correct
46	Correct	145 ms	1236 KB	Output is correct
47	Correct	111 ms	1236 KB	Output is correct
48	Correct	20 ms	1304 KB	Output is correct
49	Correct	23 ms	1312 KB	Output is correct

Subtask #5
0.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	468 KB	Output is correct
18	Correct	0 ms	468 KB	Output is correct
19	Correct	1 ms	544 KB	Output is correct
20	Correct	1 ms	572 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	1 ms	576 KB	Output is correct
26	Correct	1 ms	568 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	1 ms	572 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	444 KB	Output is correct
34	Correct	1 ms	596 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	122 ms	1316 KB	Output is correct
37	Correct	96 ms	1236 KB	Output is correct
38	Correct	127 ms	1312 KB	Output is correct
39	Correct	134 ms	1300 KB	Output is correct
40	Correct	132 ms	1300 KB	Output is correct
41	Correct	52 ms	1316 KB	Output is correct
42	Correct	111 ms	1236 KB	Output is correct
43	Correct	134 ms	1304 KB	Output is correct
44	Correct	117 ms	1300 KB	Output is correct
45	Correct	128 ms	1276 KB	Output is correct
46	Correct	145 ms	1236 KB	Output is correct
47	Correct	111 ms	1236 KB	Output is correct
48	Correct	20 ms	1304 KB	Output is correct
49	Correct	23 ms	1312 KB	Output is correct
50	Execution timed out	7018 ms	6356 KB	Time limit exceeded
51	Halted	0 ms	0 KB	-

Subtask #6
0.0 / 3.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	468 KB	Output is correct
18	Correct	0 ms	468 KB	Output is correct
19	Correct	1 ms	544 KB	Output is correct
20	Correct	1 ms	572 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	1 ms	576 KB	Output is correct
26	Correct	1 ms	568 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	1 ms	572 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	444 KB	Output is correct
34	Correct	1 ms	596 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	823 ms	196908 KB	Output is correct
37	Correct	866 ms	197012 KB	Output is correct
38	Correct	779 ms	196860 KB	Output is correct
39	Correct	795 ms	196764 KB	Output is correct
40	Correct	785 ms	196768 KB	Output is correct
41	Correct	396 ms	196764 KB	Output is correct
42	Correct	799 ms	196804 KB	Output is correct
43	Correct	848 ms	196788 KB	Output is correct
44	Correct	815 ms	197004 KB	Output is correct
45	Correct	780 ms	196776 KB	Output is correct
46	Correct	795 ms	196776 KB	Output is correct
47	Correct	778 ms	196444 KB	Output is correct
48	Correct	817 ms	196620 KB	Output is correct
49	Correct	780 ms	196736 KB	Output is correct
50	Correct	122 ms	1316 KB	Output is correct
51	Correct	96 ms	1236 KB	Output is correct
52	Correct	127 ms	1312 KB	Output is correct
53	Correct	134 ms	1300 KB	Output is correct
54	Correct	132 ms	1300 KB	Output is correct
55	Correct	52 ms	1316 KB	Output is correct
56	Correct	111 ms	1236 KB	Output is correct
57	Correct	134 ms	1304 KB	Output is correct
58	Correct	117 ms	1300 KB	Output is correct
59	Correct	128 ms	1276 KB	Output is correct
60	Correct	145 ms	1236 KB	Output is correct
61	Correct	111 ms	1236 KB	Output is correct
62	Correct	20 ms	1304 KB	Output is correct
63	Correct	23 ms	1312 KB	Output is correct
64	Execution timed out	7018 ms	6356 KB	Time limit exceeded
65	Halted	0 ms	0 KB	-

Subtask #7
0.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	468 KB	Output is correct
18	Correct	0 ms	468 KB	Output is correct
19	Correct	1 ms	544 KB	Output is correct
20	Correct	1 ms	572 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	1 ms	576 KB	Output is correct
26	Correct	1 ms	568 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	1 ms	572 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	444 KB	Output is correct
34	Correct	1 ms	596 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	823 ms	196908 KB	Output is correct
37	Correct	866 ms	197012 KB	Output is correct
38	Correct	779 ms	196860 KB	Output is correct
39	Correct	795 ms	196764 KB	Output is correct
40	Correct	785 ms	196768 KB	Output is correct
41	Correct	396 ms	196764 KB	Output is correct
42	Correct	799 ms	196804 KB	Output is correct
43	Correct	848 ms	196788 KB	Output is correct
44	Correct	815 ms	197004 KB	Output is correct
45	Correct	780 ms	196776 KB	Output is correct
46	Correct	795 ms	196776 KB	Output is correct
47	Correct	778 ms	196444 KB	Output is correct
48	Correct	817 ms	196620 KB	Output is correct
49	Correct	780 ms	196736 KB	Output is correct
50	Correct	122 ms	1316 KB	Output is correct
51	Correct	96 ms	1236 KB	Output is correct
52	Correct	127 ms	1312 KB	Output is correct
53	Correct	134 ms	1300 KB	Output is correct
54	Correct	132 ms	1300 KB	Output is correct
55	Correct	52 ms	1316 KB	Output is correct
56	Correct	111 ms	1236 KB	Output is correct
57	Correct	134 ms	1304 KB	Output is correct
58	Correct	117 ms	1300 KB	Output is correct
59	Correct	128 ms	1276 KB	Output is correct
60	Correct	145 ms	1236 KB	Output is correct
61	Correct	111 ms	1236 KB	Output is correct
62	Correct	20 ms	1304 KB	Output is correct
63	Correct	23 ms	1312 KB	Output is correct
64	Execution timed out	7018 ms	6356 KB	Time limit exceeded
65	Halted	0 ms	0 KB	-

Subtask #8
0.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	468 KB	Output is correct
2	Correct	1 ms	444 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	0 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	0 ms	468 KB	Output is correct
9	Correct	0 ms	448 KB	Output is correct
10	Correct	0 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	440 KB	Output is correct
13	Correct	0 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	1 ms	448 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	468 KB	Output is correct
18	Correct	0 ms	468 KB	Output is correct
19	Correct	1 ms	544 KB	Output is correct
20	Correct	1 ms	572 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	1 ms	576 KB	Output is correct
26	Correct	1 ms	568 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	1 ms	572 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	444 KB	Output is correct
34	Correct	1 ms	596 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	823 ms	196908 KB	Output is correct
37	Correct	866 ms	197012 KB	Output is correct
38	Correct	779 ms	196860 KB	Output is correct
39	Correct	795 ms	196764 KB	Output is correct
40	Correct	785 ms	196768 KB	Output is correct
41	Correct	396 ms	196764 KB	Output is correct
42	Correct	799 ms	196804 KB	Output is correct
43	Correct	848 ms	196788 KB	Output is correct
44	Correct	815 ms	197004 KB	Output is correct
45	Correct	780 ms	196776 KB	Output is correct
46	Correct	795 ms	196776 KB	Output is correct
47	Correct	778 ms	196444 KB	Output is correct
48	Correct	817 ms	196620 KB	Output is correct
49	Correct	780 ms	196736 KB	Output is correct
50	Correct	122 ms	1316 KB	Output is correct
51	Correct	96 ms	1236 KB	Output is correct
52	Correct	127 ms	1312 KB	Output is correct
53	Correct	134 ms	1300 KB	Output is correct
54	Correct	132 ms	1300 KB	Output is correct
55	Correct	52 ms	1316 KB	Output is correct
56	Correct	111 ms	1236 KB	Output is correct
57	Correct	134 ms	1304 KB	Output is correct
58	Correct	117 ms	1300 KB	Output is correct
59	Correct	128 ms	1276 KB	Output is correct
60	Correct	145 ms	1236 KB	Output is correct
61	Correct	111 ms	1236 KB	Output is correct
62	Correct	20 ms	1304 KB	Output is correct
63	Correct	23 ms	1312 KB	Output is correct
64	Execution timed out	7018 ms	6356 KB	Time limit exceeded
65	Halted	0 ms	0 KB	-

답안 #577205

Compilation message