Submission #245094

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
245094	2020-07-05T13:24:24 Z	Tc14	Political Development (BOI17_politicaldevelopment)	C++17	4 / 100	142 ms	1920 KB

politicaldevelopment

//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ve vector
typedef long long ll;

const int MAXN = 50000;

int r;
ve<int> G[MAXN];
ve<int> S;

bool disagree(int a, int b) {
    for (int i : G[a]) {
        if (i == b) return true;
    }
    return false;
}

void f(int a, int i, int d, int s) {

    bool valid;

    if (i == d) r = max(r, s);
    else {
        f(a, i + 1, d, s);

        valid = true;
        for (int i = 0; i < s; i++) {
            if (!disagree(S[i], G[a][i]) || !disagree(G[a][i], S[i])) {
                valid = false;
                break;
            }
        }

        if (valid) {
            S.push_back(G[a][i]);
            f(a, i + 1, d, s + 1);
            S.pop_back();
        }
    }

}

int main() {

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, k, d, a;

    cin >> n >> k;

    for (int i = 0; i < n; i++) {
        cin >> d;
        for (int j = 0; j < d; j++) {
            cin >> a;
            G[i].push_back(a);
        }
    }

    r = 1;
    for (int i = 0; i < n; i++) {
        S = {i};
        f(i, 0, G[i].size(), 1);
    }

    cout << r << endl;

    return 0;
}

Subtask #1

4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	1536 KB	Output is correct
2	Correct	5 ms	1536 KB	Output is correct
3	Correct	7 ms	1664 KB	Output is correct
4	Correct	139 ms	1920 KB	Output is correct
5	Correct	142 ms	1920 KB	Output is correct
6	Correct	17 ms	1664 KB	Output is correct
7	Correct	16 ms	1664 KB	Output is correct
8	Correct	6 ms	1536 KB	Output is correct
9	Correct	5 ms	1536 KB	Output is correct
10	Correct	5 ms	1536 KB	Output is correct

Subtask #2

0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	1536 KB	Output is correct
2	Correct	5 ms	1536 KB	Output is correct
3	Correct	7 ms	1664 KB	Output is correct
4	Correct	139 ms	1920 KB	Output is correct
5	Correct	142 ms	1920 KB	Output is correct
6	Correct	17 ms	1664 KB	Output is correct
7	Correct	16 ms	1664 KB	Output is correct
8	Correct	6 ms	1536 KB	Output is correct
9	Correct	5 ms	1536 KB	Output is correct
10	Correct	5 ms	1536 KB	Output is correct
11	Correct	137 ms	1920 KB	Output is correct
12	Correct	136 ms	1920 KB	Output is correct
13	Correct	6 ms	1536 KB	Output is correct
14	Correct	138 ms	1920 KB	Output is correct
15	Correct	5 ms	1536 KB	Output is correct
16	Correct	16 ms	1664 KB	Output is correct
17	Correct	5 ms	1536 KB	Output is correct
18	Correct	16 ms	1664 KB	Output is correct
19	Correct	6 ms	1536 KB	Output is correct
20	Correct	6 ms	1664 KB	Output is correct
21	Correct	6 ms	1664 KB	Output is correct
22	Correct	5 ms	1536 KB	Output is correct
23	Correct	8 ms	1664 KB	Output is correct
24	Correct	5 ms	1536 KB	Output is correct
25	Correct	8 ms	1716 KB	Output is correct
26	Correct	8 ms	1664 KB	Output is correct
27	Correct	10 ms	1664 KB	Output is correct
28	Correct	7 ms	1664 KB	Output is correct
29	Correct	7 ms	1664 KB	Output is correct
30	Correct	45 ms	1792 KB	Output is correct
31	Correct	8 ms	1664 KB	Output is correct
32	Correct	46 ms	1792 KB	Output is correct
33	Correct	8 ms	1664 KB	Output is correct
34	Correct	8 ms	1664 KB	Output is correct
35	Correct	7 ms	1536 KB	Output is correct
36	Correct	6 ms	1536 KB	Output is correct
37	Correct	6 ms	1536 KB	Output is correct
38	Correct	7 ms	1536 KB	Output is correct
39	Correct	7 ms	1536 KB	Output is correct
40	Incorrect	10 ms	1664 KB	Output isn't correct
41	Halted	0 ms	0 KB	-

Subtask #3

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	1536 KB	Output is correct
2	Incorrect	5 ms	1536 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #4

0 / 38.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	1536 KB	Output is correct
2	Correct	5 ms	1536 KB	Output is correct
3	Correct	7 ms	1664 KB	Output is correct
4	Correct	139 ms	1920 KB	Output is correct
5	Correct	142 ms	1920 KB	Output is correct
6	Correct	17 ms	1664 KB	Output is correct
7	Correct	16 ms	1664 KB	Output is correct
8	Correct	6 ms	1536 KB	Output is correct
9	Correct	5 ms	1536 KB	Output is correct
10	Correct	5 ms	1536 KB	Output is correct
11	Correct	137 ms	1920 KB	Output is correct
12	Correct	136 ms	1920 KB	Output is correct
13	Correct	6 ms	1536 KB	Output is correct
14	Correct	138 ms	1920 KB	Output is correct
15	Correct	5 ms	1536 KB	Output is correct
16	Correct	16 ms	1664 KB	Output is correct
17	Correct	5 ms	1536 KB	Output is correct
18	Correct	16 ms	1664 KB	Output is correct
19	Correct	6 ms	1536 KB	Output is correct
20	Correct	6 ms	1664 KB	Output is correct
21	Correct	6 ms	1664 KB	Output is correct
22	Correct	5 ms	1536 KB	Output is correct
23	Correct	8 ms	1664 KB	Output is correct
24	Correct	5 ms	1536 KB	Output is correct
25	Correct	8 ms	1716 KB	Output is correct
26	Correct	8 ms	1664 KB	Output is correct
27	Correct	10 ms	1664 KB	Output is correct
28	Correct	7 ms	1664 KB	Output is correct
29	Correct	7 ms	1664 KB	Output is correct
30	Correct	45 ms	1792 KB	Output is correct
31	Correct	8 ms	1664 KB	Output is correct
32	Correct	46 ms	1792 KB	Output is correct
33	Correct	8 ms	1664 KB	Output is correct
34	Correct	8 ms	1664 KB	Output is correct
35	Correct	7 ms	1536 KB	Output is correct
36	Correct	6 ms	1536 KB	Output is correct
37	Correct	6 ms	1536 KB	Output is correct
38	Correct	7 ms	1536 KB	Output is correct
39	Correct	7 ms	1536 KB	Output is correct
40	Incorrect	10 ms	1664 KB	Output isn't correct
41	Halted	0 ms	0 KB	-

Subtask #5

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	1536 KB	Output is correct
2	Correct	5 ms	1536 KB	Output is correct
3	Correct	7 ms	1664 KB	Output is correct
4	Correct	139 ms	1920 KB	Output is correct
5	Correct	142 ms	1920 KB	Output is correct
6	Correct	17 ms	1664 KB	Output is correct
7	Correct	16 ms	1664 KB	Output is correct
8	Correct	6 ms	1536 KB	Output is correct
9	Correct	5 ms	1536 KB	Output is correct
10	Correct	5 ms	1536 KB	Output is correct
11	Correct	137 ms	1920 KB	Output is correct
12	Correct	136 ms	1920 KB	Output is correct
13	Correct	6 ms	1536 KB	Output is correct
14	Correct	138 ms	1920 KB	Output is correct
15	Correct	5 ms	1536 KB	Output is correct
16	Correct	16 ms	1664 KB	Output is correct
17	Correct	5 ms	1536 KB	Output is correct
18	Correct	16 ms	1664 KB	Output is correct
19	Correct	6 ms	1536 KB	Output is correct
20	Correct	6 ms	1664 KB	Output is correct
21	Correct	6 ms	1664 KB	Output is correct
22	Correct	5 ms	1536 KB	Output is correct
23	Correct	8 ms	1664 KB	Output is correct
24	Correct	5 ms	1536 KB	Output is correct
25	Correct	8 ms	1716 KB	Output is correct
26	Correct	8 ms	1664 KB	Output is correct
27	Correct	10 ms	1664 KB	Output is correct
28	Correct	7 ms	1664 KB	Output is correct
29	Correct	7 ms	1664 KB	Output is correct
30	Correct	45 ms	1792 KB	Output is correct
31	Correct	8 ms	1664 KB	Output is correct
32	Correct	46 ms	1792 KB	Output is correct
33	Correct	8 ms	1664 KB	Output is correct
34	Correct	8 ms	1664 KB	Output is correct
35	Correct	7 ms	1536 KB	Output is correct
36	Correct	6 ms	1536 KB	Output is correct
37	Correct	6 ms	1536 KB	Output is correct
38	Correct	7 ms	1536 KB	Output is correct
39	Correct	7 ms	1536 KB	Output is correct
40	Incorrect	10 ms	1664 KB	Output isn't correct
41	Halted	0 ms	0 KB	-