Submission #808646

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
808646	2023-08-05T08:30:49 Z	PanosPask	Amusement Park (CEOI19_amusementpark)	C++14	100 / 100	1358 ms	1364 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;
const int INV2 = 499122177;

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] % MOD * (ll)INV2) % MOD;

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

    return 0;
}

Compilation message

amusementpark.cpp: In function 'int main()':
amusementpark.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     scanf("%d %d", &N, &M);
      |     ~~~~~^~~~~~~~~~~~~~~~~
amusementpark.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         scanf("%d %d", &u, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 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	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct

Subtask #3
23.0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 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	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 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	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	1 ms	280 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	0 ms	212 KB	Output is correct
41	Correct	0 ms	212 KB	Output is correct
42	Correct	0 ms	212 KB	Output is correct
43	Correct	0 ms	212 KB	Output is correct
44	Correct	1 ms	212 KB	Output is correct
45	Correct	0 ms	212 KB	Output is correct
46	Correct	1 ms	288 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	0 ms	212 KB	Output is correct
49	Correct	0 ms	212 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	0 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	0 ms	212 KB	Output is correct
60	Correct	0 ms	212 KB	Output is correct
61	Correct	1 ms	212 KB	Output is correct
62	Correct	1 ms	212 KB	Output is correct
63	Correct	1 ms	212 KB	Output is correct
64	Correct	1 ms	212 KB	Output is correct

Subtask #4
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 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	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 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	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	1 ms	280 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	0 ms	212 KB	Output is correct
41	Correct	0 ms	212 KB	Output is correct
42	Correct	0 ms	212 KB	Output is correct
43	Correct	0 ms	212 KB	Output is correct
44	Correct	1 ms	212 KB	Output is correct
45	Correct	0 ms	212 KB	Output is correct
46	Correct	1 ms	288 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	0 ms	212 KB	Output is correct
49	Correct	0 ms	212 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	0 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	0 ms	212 KB	Output is correct
60	Correct	0 ms	212 KB	Output is correct
61	Correct	1 ms	212 KB	Output is correct
62	Correct	1 ms	212 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	364 KB	Output is correct
66	Correct	9 ms	340 KB	Output is correct
67	Correct	9 ms	368 KB	Output is correct
68	Correct	8 ms	340 KB	Output is correct
69	Correct	16 ms	364 KB	Output is correct
70	Correct	12 ms	360 KB	Output is correct
71	Correct	12 ms	340 KB	Output is correct
72	Correct	12 ms	340 KB	Output is correct
73	Correct	10 ms	340 KB	Output is correct
74	Correct	10 ms	364 KB	Output is correct
75	Correct	12 ms	468 KB	Output is correct
76	Correct	10 ms	256 KB	Output is correct
77	Correct	31 ms	340 KB	Output is correct
78	Correct	28 ms	440 KB	Output is correct
79	Correct	26 ms	340 KB	Output is correct
80	Correct	25 ms	340 KB	Output is correct
81	Correct	23 ms	424 KB	Output is correct
82	Correct	23 ms	428 KB	Output is correct
83	Correct	21 ms	448 KB	Output is correct
84	Correct	20 ms	428 KB	Output is correct
85	Correct	44 ms	432 KB	Output is correct
86	Correct	33 ms	340 KB	Output is correct
87	Correct	36 ms	340 KB	Output is correct
88	Correct	35 ms	340 KB	Output is correct
89	Correct	28 ms	444 KB	Output is correct
90	Correct	28 ms	340 KB	Output is correct
91	Correct	30 ms	340 KB	Output is correct
92	Correct	29 ms	340 KB	Output is correct

Subtask #5
37.0 / 37.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 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	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 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	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	1 ms	280 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	0 ms	212 KB	Output is correct
41	Correct	0 ms	212 KB	Output is correct
42	Correct	0 ms	212 KB	Output is correct
43	Correct	0 ms	212 KB	Output is correct
44	Correct	1 ms	212 KB	Output is correct
45	Correct	0 ms	212 KB	Output is correct
46	Correct	1 ms	288 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	0 ms	212 KB	Output is correct
49	Correct	0 ms	212 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	0 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	0 ms	212 KB	Output is correct
60	Correct	0 ms	212 KB	Output is correct
61	Correct	1 ms	212 KB	Output is correct
62	Correct	1 ms	212 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	364 KB	Output is correct
66	Correct	9 ms	340 KB	Output is correct
67	Correct	9 ms	368 KB	Output is correct
68	Correct	8 ms	340 KB	Output is correct
69	Correct	16 ms	364 KB	Output is correct
70	Correct	12 ms	360 KB	Output is correct
71	Correct	12 ms	340 KB	Output is correct
72	Correct	12 ms	340 KB	Output is correct
73	Correct	10 ms	340 KB	Output is correct
74	Correct	10 ms	364 KB	Output is correct
75	Correct	12 ms	468 KB	Output is correct
76	Correct	10 ms	256 KB	Output is correct
77	Correct	31 ms	340 KB	Output is correct
78	Correct	28 ms	440 KB	Output is correct
79	Correct	26 ms	340 KB	Output is correct
80	Correct	25 ms	340 KB	Output is correct
81	Correct	23 ms	424 KB	Output is correct
82	Correct	23 ms	428 KB	Output is correct
83	Correct	21 ms	448 KB	Output is correct
84	Correct	20 ms	428 KB	Output is correct
85	Correct	44 ms	432 KB	Output is correct
86	Correct	33 ms	340 KB	Output is correct
87	Correct	36 ms	340 KB	Output is correct
88	Correct	35 ms	340 KB	Output is correct
89	Correct	28 ms	444 KB	Output is correct
90	Correct	28 ms	340 KB	Output is correct
91	Correct	30 ms	340 KB	Output is correct
92	Correct	29 ms	340 KB	Output is correct
93	Correct	862 ms	1364 KB	Output is correct
94	Correct	885 ms	1356 KB	Output is correct
95	Correct	868 ms	1364 KB	Output is correct
96	Correct	748 ms	1364 KB	Output is correct
97	Correct	659 ms	1364 KB	Output is correct
98	Correct	758 ms	1364 KB	Output is correct
99	Correct	96 ms	468 KB	Output is correct
100	Correct	86 ms	552 KB	Output is correct
101	Correct	75 ms	560 KB	Output is correct
102	Correct	68 ms	552 KB	Output is correct
103	Correct	454 ms	820 KB	Output is correct
104	Correct	320 ms	828 KB	Output is correct
105	Correct	279 ms	820 KB	Output is correct
106	Correct	222 ms	824 KB	Output is correct
107	Correct	1358 ms	1364 KB	Output is correct
108	Correct	741 ms	1364 KB	Output is correct
109	Correct	624 ms	1364 KB	Output is correct
110	Correct	556 ms	1364 KB	Output is correct
111	Correct	63 ms	560 KB	Output is correct
112	Correct	59 ms	468 KB	Output is correct
113	Correct	57 ms	564 KB	Output is correct
114	Correct	134 ms	560 KB	Output is correct
115	Correct	105 ms	568 KB	Output is correct
116	Correct	106 ms	468 KB	Output is correct
117	Correct	101 ms	556 KB	Output is correct
118	Correct	85 ms	560 KB	Output is correct
119	Correct	86 ms	468 KB	Output is correct
120	Correct	87 ms	564 KB	Output is correct
121	Correct	83 ms	556 KB	Output is correct
122	Correct	203 ms	820 KB	Output is correct
123	Correct	177 ms	820 KB	Output is correct
124	Correct	166 ms	724 KB	Output is correct
125	Correct	165 ms	724 KB	Output is correct
126	Correct	157 ms	824 KB	Output is correct
127	Correct	147 ms	824 KB	Output is correct
128	Correct	149 ms	820 KB	Output is correct
129	Correct	145 ms	820 KB	Output is correct
130	Correct	142 ms	824 KB	Output is correct
131	Correct	423 ms	820 KB	Output is correct
132	Correct	290 ms	824 KB	Output is correct
133	Correct	307 ms	828 KB	Output is correct
134	Correct	301 ms	824 KB	Output is correct
135	Correct	240 ms	828 KB	Output is correct
136	Correct	269 ms	840 KB	Output is correct
137	Correct	250 ms	820 KB	Output is correct
138	Correct	242 ms	824 KB	Output is correct
139	Correct	208 ms	820 KB	Output is correct
140	Correct	220 ms	824 KB	Output is correct
141	Correct	205 ms	828 KB	Output is correct
142	Correct	496 ms	1364 KB	Output is correct
143	Correct	462 ms	1364 KB	Output is correct
144	Correct	439 ms	1364 KB	Output is correct
145	Correct	422 ms	1364 KB	Output is correct
146	Correct	416 ms	1364 KB	Output is correct
147	Correct	411 ms	1364 KB	Output is correct
148	Correct	494 ms	1364 KB	Output is correct
149	Correct	484 ms	1364 KB	Output is correct
150	Correct	481 ms	1364 KB	Output is correct
151	Correct	557 ms	1364 KB	Output is correct
152	Correct	558 ms	1364 KB	Output is correct
153	Correct	730 ms	1364 KB	Output is correct
154	Correct	722 ms	1364 KB	Output is correct
155	Correct	746 ms	1364 KB	Output is correct
156	Correct	726 ms	1352 KB	Output is correct
157	Correct	720 ms	1364 KB	Output is correct
158	Correct	736 ms	1364 KB	Output is correct
159	Correct	632 ms	1352 KB	Output is correct
160	Correct	638 ms	1364 KB	Output is correct
161	Correct	636 ms	1364 KB	Output is correct
162	Correct	592 ms	1364 KB	Output is correct
163	Correct	596 ms	1364 KB	Output is correct
164	Correct	541 ms	1364 KB	Output is correct
165	Correct	599 ms	1364 KB	Output is correct
166	Correct	552 ms	1364 KB	Output is correct
167	Correct	580 ms	1356 KB	Output is correct

Submission #808646

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 12.0 / 12.0

Subtask #3 23.0 / 23.0

Subtask #4 21.0 / 21.0

Subtask #5 37.0 / 37.0

Subtask #1
7.0 / 7.0

Subtask #2
12.0 / 12.0

Subtask #3
23.0 / 23.0

Subtask #4
21.0 / 21.0

Subtask #5
37.0 / 37.0