Submission #808636

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
808636	2023-08-05T08:25:57 Z	PanosPask	Amusement Park (CEOI19_amusementpark)	C++14	42 / 100	31 ms	432 KB

amusementpark

#include <bits/stdc++.h>
#define pb push_back
#define CHECK_BIT(val, pos) (val & (1 << pos))

using namespace std;

const int MOD = 998244353;

typedef long long ll;

int N, M;
vector<int> adj_list;

// dp[s]: # of ways to construct a DAG in our graph, by directing some of the edges
vector<int> dp;
vector<bool> isgood;

void add(int& a, int b)
{
    a += b;
    if (a > MOD)
        a -= MOD;
}

void subtract(int& a, int b)
{
    a -= b;
    if (a < 0)
        a += MOD;
}

int main(void)
{
    scanf("%d %d", &N, &M);

    adj_list.resize(N);
    for (int i = 0; i < M; i++) {
        int u, v;
        scanf("%d %d", &u, &v);
        u--; v--;

        adj_list[u] |= (1 << v);
        adj_list[v] |= (1 << u);
    }

    isgood.resize(1 << N);
    dp.resize(1 << N);
    for (int s = 0; s < 1 << N; s++) {
        isgood[s] = true;
        for (int i = 0; i < N; i++) {
            if (CHECK_BIT(s, i))
                isgood[s] = isgood[s] && ((adj_list[i] & s) == 0);
        }
    }

    dp[0] = 1;
    for (int s = 1; s < 1 << N; s++) {
        dp[s] = 0;
        if (__builtin_popcount(s) == 1) {
            dp[s] = 1;
            continue;
        }
        for (int p = s; p > 0; p = (p - 1) & s) {
            if (!isgood[p])
                continue;

            if (__builtin_popcount(p) % 2)
                add(dp[s], dp[s - p]);
            else
                subtract(dp[s], dp[s - p]);
        }
    }

    int ans = ((ll)M * dp[(1 << N) - 1] / 2) % MOD;

    printf("%d\n", ans);

    return 0;
}

Compilation message

amusementpark.cpp: In function 'int main()':
amusementpark.cpp:34:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     scanf("%d %d", &N, &M);
      |     ~~~~~^~~~~~~~~~~~~~~~~
amusementpark.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         scanf("%d %d", &u, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	300 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	292 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	300 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	292 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	296 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	216 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	300 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct

Subtask #3
23.0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	300 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	292 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	296 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	216 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	300 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	1 ms	212 KB	Output is correct
31	Correct	0 ms	300 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	0 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	300 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	0 ms	300 KB	Output is correct
39	Correct	1 ms	296 KB	Output is correct
40	Correct	1 ms	300 KB	Output is correct
41	Correct	1 ms	296 KB	Output is correct
42	Correct	1 ms	212 KB	Output is correct
43	Correct	0 ms	212 KB	Output is correct
44	Correct	0 ms	212 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	1 ms	304 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	1 ms	212 KB	Output is correct
49	Correct	1 ms	212 KB	Output is correct
50	Correct	1 ms	212 KB	Output is correct
51	Correct	1 ms	212 KB	Output is correct
52	Correct	1 ms	212 KB	Output is correct
53	Correct	1 ms	212 KB	Output is correct
54	Correct	1 ms	212 KB	Output is correct
55	Correct	1 ms	212 KB	Output is correct
56	Correct	1 ms	212 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	1 ms	212 KB	Output is correct
59	Correct	1 ms	296 KB	Output is correct
60	Correct	1 ms	212 KB	Output is correct
61	Correct	1 ms	304 KB	Output is correct
62	Correct	1 ms	300 KB	Output is correct
63	Correct	1 ms	212 KB	Output is correct
64	Correct	1 ms	212 KB	Output is correct

Subtask #4
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	300 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	292 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	296 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	216 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	300 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	1 ms	212 KB	Output is correct
31	Correct	0 ms	300 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	0 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	300 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	0 ms	300 KB	Output is correct
39	Correct	1 ms	296 KB	Output is correct
40	Correct	1 ms	300 KB	Output is correct
41	Correct	1 ms	296 KB	Output is correct
42	Correct	1 ms	212 KB	Output is correct
43	Correct	0 ms	212 KB	Output is correct
44	Correct	0 ms	212 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	1 ms	304 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	1 ms	212 KB	Output is correct
49	Correct	1 ms	212 KB	Output is correct
50	Correct	1 ms	212 KB	Output is correct
51	Correct	1 ms	212 KB	Output is correct
52	Correct	1 ms	212 KB	Output is correct
53	Correct	1 ms	212 KB	Output is correct
54	Correct	1 ms	212 KB	Output is correct
55	Correct	1 ms	212 KB	Output is correct
56	Correct	1 ms	212 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	1 ms	212 KB	Output is correct
59	Correct	1 ms	296 KB	Output is correct
60	Correct	1 ms	212 KB	Output is correct
61	Correct	1 ms	304 KB	Output is correct
62	Correct	1 ms	300 KB	Output is correct
63	Correct	1 ms	212 KB	Output is correct
64	Correct	1 ms	212 KB	Output is correct
65	Correct	10 ms	340 KB	Output is correct
66	Correct	10 ms	304 KB	Output is correct
67	Correct	9 ms	300 KB	Output is correct
68	Correct	9 ms	296 KB	Output is correct
69	Correct	15 ms	364 KB	Output is correct
70	Correct	12 ms	368 KB	Output is correct
71	Correct	13 ms	340 KB	Output is correct
72	Correct	14 ms	340 KB	Output is correct
73	Correct	10 ms	368 KB	Output is correct
74	Correct	10 ms	340 KB	Output is correct
75	Correct	11 ms	372 KB	Output is correct
76	Correct	10 ms	340 KB	Output is correct
77	Correct	31 ms	340 KB	Output is correct
78	Correct	28 ms	432 KB	Output is correct
79	Correct	27 ms	432 KB	Output is correct
80	Incorrect	25 ms	340 KB	Output isn't correct
81	Halted	0 ms	0 KB	-

Subtask #5
0 / 37.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	300 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	292 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	296 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	216 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	300 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	1 ms	212 KB	Output is correct
31	Correct	0 ms	300 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	0 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	300 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	0 ms	300 KB	Output is correct
39	Correct	1 ms	296 KB	Output is correct
40	Correct	1 ms	300 KB	Output is correct
41	Correct	1 ms	296 KB	Output is correct
42	Correct	1 ms	212 KB	Output is correct
43	Correct	0 ms	212 KB	Output is correct
44	Correct	0 ms	212 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	1 ms	304 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	1 ms	212 KB	Output is correct
49	Correct	1 ms	212 KB	Output is correct
50	Correct	1 ms	212 KB	Output is correct
51	Correct	1 ms	212 KB	Output is correct
52	Correct	1 ms	212 KB	Output is correct
53	Correct	1 ms	212 KB	Output is correct
54	Correct	1 ms	212 KB	Output is correct
55	Correct	1 ms	212 KB	Output is correct
56	Correct	1 ms	212 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	1 ms	212 KB	Output is correct
59	Correct	1 ms	296 KB	Output is correct
60	Correct	1 ms	212 KB	Output is correct
61	Correct	1 ms	304 KB	Output is correct
62	Correct	1 ms	300 KB	Output is correct
63	Correct	1 ms	212 KB	Output is correct
64	Correct	1 ms	212 KB	Output is correct
65	Correct	10 ms	340 KB	Output is correct
66	Correct	10 ms	304 KB	Output is correct
67	Correct	9 ms	300 KB	Output is correct
68	Correct	9 ms	296 KB	Output is correct
69	Correct	15 ms	364 KB	Output is correct
70	Correct	12 ms	368 KB	Output is correct
71	Correct	13 ms	340 KB	Output is correct
72	Correct	14 ms	340 KB	Output is correct
73	Correct	10 ms	368 KB	Output is correct
74	Correct	10 ms	340 KB	Output is correct
75	Correct	11 ms	372 KB	Output is correct
76	Correct	10 ms	340 KB	Output is correct
77	Correct	31 ms	340 KB	Output is correct
78	Correct	28 ms	432 KB	Output is correct
79	Correct	27 ms	432 KB	Output is correct
80	Incorrect	25 ms	340 KB	Output isn't correct
81	Halted	0 ms	0 KB	-

Submission #808636

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 12.0 / 12.0

Subtask #3 23.0 / 23.0

Subtask #4 0 / 21.0

Subtask #5 0 / 37.0

Subtask #1
7.0 / 7.0

Subtask #2
12.0 / 12.0

Subtask #3
23.0 / 23.0

Subtask #4
0 / 21.0

Subtask #5
0 / 37.0