답안 #545930

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
545930	2022-04-05T16:12:13 Z	rainboy	Amusement Park (CEOI19_amusementpark)	C	100 / 100	300 ms	59892 KB

amusementpark

/* https://codeforces.com/blog/entry/68748?#comment-530893 (Paulliant) */
#include <stdio.h>

#define N	18
#define MD	998244353
#define MD2	996491788296388609LL
#define V2	499122177

void sub(int *aa, int n) {
	int i, b;

	for (i = 0; i < n; i++)
		for (b = 0; b < 1 << n; b++)
			if ((b & 1 << i) != 0 && (aa[b] += aa[b ^ 1 << i]) >= MD)
				aa[b] -= MD;
}

int main() {
	static int adj[N], cnt[1 << N], dp[N + 1][1 << N];
	static long long dq[N + 1][1 << N];
	int n, m, h, i, j, k, l, b, c;
	long long ans;

	scanf("%d%d", &n, &m);
	for (h = 0; h < m; h++) {
		scanf("%d%d", &i, &j), i--, j--;
		adj[i] |= 1 << j, adj[j] |= 1 << i;
	}
	for (b = 1; b < 1 << n; b++)
		cnt[b] = cnt[b & b - 1] + 1;
	for (b = 1; b < 1 << n; b++) {
		c = 0;
		for (i = 0; i < n; i++)
			if ((b & 1 << i) != 0)
				c |= adj[i];
		if ((b & c) != 0)
			continue;
		dp[cnt[b]][b] = cnt[b] % 2 == 0 ? MD - 1 : 1;
	}
	for (k = 0; k <= n; k++)
		sub(dp[k], n);
	for (b = 0; b < 1 << n; b++)
		dq[0][b] = 1;
	for (k = 0; k < n; k++) {
		for (b = 0; b < 1 << n; b++)
			dq[k][b] %= MD;
		for (l = 1; k + l <= n; l++)
			for (b = 0; b < 1 << n; b++)
				if ((dq[k + l][b] += dq[k][b] * dp[l][b]) >= MD2)
					dq[k + l][b] -= MD2;
	}
	ans = 0;
	for (b = 0; b < 1 << n; b++)
		ans += dq[k][b] % MD * (cnt[(1 << n) - 1 ^ b] % 2 == 0 ? 1 : -1);
	ans %= MD;
	if (ans < 0)
		ans += MD;
	ans = ans * m % MD * V2 % MD;
	printf("%lld\n", ans);
	return 0;
}

Compilation message

amusementpark.c: In function 'main':
amusementpark.c:30:22: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   30 |   cnt[b] = cnt[b & b - 1] + 1;
      |                    ~~^~~
amusementpark.c:54:40: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   54 |   ans += dq[k][b] % MD * (cnt[(1 << n) - 1 ^ b] % 2 == 0 ? 1 : -1);
      |                               ~~~~~~~~~^~~
amusementpark.c:24:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
amusementpark.c:26:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	288 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	292 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	288 KB	Output is correct
16	Correct	0 ms	292 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	288 KB	Output is correct
23	Correct	1 ms	292 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	288 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	292 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	288 KB	Output is correct
16	Correct	0 ms	292 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	288 KB	Output is correct
23	Correct	1 ms	292 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	296 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	0 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	420 KB	Output is correct
35	Correct	1 ms	340 KB	Output is correct
36	Correct	1 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	416 KB	Output is correct
39	Correct	1 ms	416 KB	Output is correct
40	Correct	1 ms	420 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	1 ms	468 KB	Output is correct
43	Correct	1 ms	416 KB	Output is correct
44	Correct	1 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct
46	Correct	1 ms	420 KB	Output is correct
47	Correct	1 ms	468 KB	Output is correct
48	Correct	1 ms	416 KB	Output is correct
49	Correct	1 ms	468 KB	Output is correct
50	Correct	1 ms	468 KB	Output is correct
51	Correct	1 ms	420 KB	Output is correct
52	Correct	1 ms	468 KB	Output is correct
53	Correct	1 ms	468 KB	Output is correct
54	Correct	1 ms	468 KB	Output is correct
55	Correct	1 ms	468 KB	Output is correct
56	Correct	1 ms	468 KB	Output is correct
57	Correct	1 ms	468 KB	Output is correct
58	Correct	1 ms	468 KB	Output is correct
59	Correct	1 ms	468 KB	Output is correct
60	Correct	1 ms	468 KB	Output is correct
61	Correct	1 ms	468 KB	Output is correct
62	Correct	1 ms	468 KB	Output is correct
63	Correct	1 ms	468 KB	Output is correct
64	Correct	1 ms	544 KB	Output is correct

Subtask #4
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	288 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	292 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	288 KB	Output is correct
16	Correct	0 ms	292 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	288 KB	Output is correct
23	Correct	1 ms	292 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	296 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	0 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	420 KB	Output is correct
35	Correct	1 ms	340 KB	Output is correct
36	Correct	1 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	416 KB	Output is correct
39	Correct	1 ms	416 KB	Output is correct
40	Correct	1 ms	420 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	1 ms	468 KB	Output is correct
43	Correct	1 ms	416 KB	Output is correct
44	Correct	1 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct
46	Correct	1 ms	420 KB	Output is correct
47	Correct	1 ms	468 KB	Output is correct
48	Correct	1 ms	416 KB	Output is correct
49	Correct	1 ms	468 KB	Output is correct
50	Correct	1 ms	468 KB	Output is correct
51	Correct	1 ms	420 KB	Output is correct
52	Correct	1 ms	468 KB	Output is correct
53	Correct	1 ms	468 KB	Output is correct
54	Correct	1 ms	468 KB	Output is correct
55	Correct	1 ms	468 KB	Output is correct
56	Correct	1 ms	468 KB	Output is correct
57	Correct	1 ms	468 KB	Output is correct
58	Correct	1 ms	468 KB	Output is correct
59	Correct	1 ms	468 KB	Output is correct
60	Correct	1 ms	468 KB	Output is correct
61	Correct	1 ms	468 KB	Output is correct
62	Correct	1 ms	468 KB	Output is correct
63	Correct	1 ms	468 KB	Output is correct
64	Correct	1 ms	544 KB	Output is correct
65	Correct	15 ms	3328 KB	Output is correct
66	Correct	15 ms	3368 KB	Output is correct
67	Correct	11 ms	3368 KB	Output is correct
68	Correct	11 ms	3412 KB	Output is correct
69	Correct	12 ms	3364 KB	Output is correct
70	Correct	14 ms	3384 KB	Output is correct
71	Correct	10 ms	3388 KB	Output is correct
72	Correct	11 ms	3364 KB	Output is correct
73	Correct	10 ms	3448 KB	Output is correct
74	Correct	10 ms	3412 KB	Output is correct
75	Correct	10 ms	3404 KB	Output is correct
76	Correct	15 ms	3412 KB	Output is correct
77	Correct	22 ms	6772 KB	Output is correct
78	Correct	23 ms	6700 KB	Output is correct
79	Correct	22 ms	6740 KB	Output is correct
80	Correct	23 ms	6792 KB	Output is correct
81	Correct	22 ms	6740 KB	Output is correct
82	Correct	29 ms	6740 KB	Output is correct
83	Correct	23 ms	6792 KB	Output is correct
84	Correct	24 ms	6696 KB	Output is correct
85	Correct	33 ms	6740 KB	Output is correct
86	Correct	33 ms	6740 KB	Output is correct
87	Correct	33 ms	6772 KB	Output is correct
88	Correct	22 ms	6656 KB	Output is correct
89	Correct	21 ms	6728 KB	Output is correct
90	Correct	22 ms	6740 KB	Output is correct
91	Correct	22 ms	6692 KB	Output is correct
92	Correct	23 ms	6772 KB	Output is correct

Subtask #5
37.0 / 37.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	288 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	292 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	288 KB	Output is correct
16	Correct	0 ms	292 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	288 KB	Output is correct
23	Correct	1 ms	292 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	296 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	0 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	420 KB	Output is correct
35	Correct	1 ms	340 KB	Output is correct
36	Correct	1 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	416 KB	Output is correct
39	Correct	1 ms	416 KB	Output is correct
40	Correct	1 ms	420 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	1 ms	468 KB	Output is correct
43	Correct	1 ms	416 KB	Output is correct
44	Correct	1 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct
46	Correct	1 ms	420 KB	Output is correct
47	Correct	1 ms	468 KB	Output is correct
48	Correct	1 ms	416 KB	Output is correct
49	Correct	1 ms	468 KB	Output is correct
50	Correct	1 ms	468 KB	Output is correct
51	Correct	1 ms	420 KB	Output is correct
52	Correct	1 ms	468 KB	Output is correct
53	Correct	1 ms	468 KB	Output is correct
54	Correct	1 ms	468 KB	Output is correct
55	Correct	1 ms	468 KB	Output is correct
56	Correct	1 ms	468 KB	Output is correct
57	Correct	1 ms	468 KB	Output is correct
58	Correct	1 ms	468 KB	Output is correct
59	Correct	1 ms	468 KB	Output is correct
60	Correct	1 ms	468 KB	Output is correct
61	Correct	1 ms	468 KB	Output is correct
62	Correct	1 ms	468 KB	Output is correct
63	Correct	1 ms	468 KB	Output is correct
64	Correct	1 ms	544 KB	Output is correct
65	Correct	15 ms	3328 KB	Output is correct
66	Correct	15 ms	3368 KB	Output is correct
67	Correct	11 ms	3368 KB	Output is correct
68	Correct	11 ms	3412 KB	Output is correct
69	Correct	12 ms	3364 KB	Output is correct
70	Correct	14 ms	3384 KB	Output is correct
71	Correct	10 ms	3388 KB	Output is correct
72	Correct	11 ms	3364 KB	Output is correct
73	Correct	10 ms	3448 KB	Output is correct
74	Correct	10 ms	3412 KB	Output is correct
75	Correct	10 ms	3404 KB	Output is correct
76	Correct	15 ms	3412 KB	Output is correct
77	Correct	22 ms	6772 KB	Output is correct
78	Correct	23 ms	6700 KB	Output is correct
79	Correct	22 ms	6740 KB	Output is correct
80	Correct	23 ms	6792 KB	Output is correct
81	Correct	22 ms	6740 KB	Output is correct
82	Correct	29 ms	6740 KB	Output is correct
83	Correct	23 ms	6792 KB	Output is correct
84	Correct	24 ms	6696 KB	Output is correct
85	Correct	33 ms	6740 KB	Output is correct
86	Correct	33 ms	6740 KB	Output is correct
87	Correct	33 ms	6772 KB	Output is correct
88	Correct	22 ms	6656 KB	Output is correct
89	Correct	21 ms	6728 KB	Output is correct
90	Correct	22 ms	6740 KB	Output is correct
91	Correct	22 ms	6692 KB	Output is correct
92	Correct	23 ms	6772 KB	Output is correct
93	Correct	236 ms	59772 KB	Output is correct
94	Correct	255 ms	59772 KB	Output is correct
95	Correct	285 ms	59892 KB	Output is correct
96	Correct	255 ms	59884 KB	Output is correct
97	Correct	282 ms	59776 KB	Output is correct
98	Correct	269 ms	59704 KB	Output is correct
99	Correct	50 ms	13824 KB	Output is correct
100	Correct	51 ms	13756 KB	Output is correct
101	Correct	77 ms	13800 KB	Output is correct
102	Correct	52 ms	13776 KB	Output is correct
103	Correct	122 ms	28620 KB	Output is correct
104	Correct	115 ms	28668 KB	Output is correct
105	Correct	127 ms	28688 KB	Output is correct
106	Correct	116 ms	28596 KB	Output is correct
107	Correct	245 ms	59772 KB	Output is correct
108	Correct	253 ms	59728 KB	Output is correct
109	Correct	244 ms	59712 KB	Output is correct
110	Correct	271 ms	59720 KB	Output is correct
111	Correct	50 ms	13708 KB	Output is correct
112	Correct	59 ms	13812 KB	Output is correct
113	Correct	68 ms	13824 KB	Output is correct
114	Correct	49 ms	13804 KB	Output is correct
115	Correct	49 ms	13824 KB	Output is correct
116	Correct	52 ms	13824 KB	Output is correct
117	Correct	52 ms	13832 KB	Output is correct
118	Correct	53 ms	13728 KB	Output is correct
119	Correct	49 ms	13808 KB	Output is correct
120	Correct	49 ms	13780 KB	Output is correct
121	Correct	50 ms	13824 KB	Output is correct
122	Correct	108 ms	28632 KB	Output is correct
123	Correct	110 ms	28620 KB	Output is correct
124	Correct	108 ms	28672 KB	Output is correct
125	Correct	109 ms	28628 KB	Output is correct
126	Correct	111 ms	28684 KB	Output is correct
127	Correct	109 ms	28684 KB	Output is correct
128	Correct	133 ms	28640 KB	Output is correct
129	Correct	129 ms	28680 KB	Output is correct
130	Correct	111 ms	28684 KB	Output is correct
131	Correct	112 ms	28680 KB	Output is correct
132	Correct	115 ms	28600 KB	Output is correct
133	Correct	112 ms	28596 KB	Output is correct
134	Correct	108 ms	28620 KB	Output is correct
135	Correct	127 ms	28616 KB	Output is correct
136	Correct	118 ms	28608 KB	Output is correct
137	Correct	112 ms	28592 KB	Output is correct
138	Correct	107 ms	28688 KB	Output is correct
139	Correct	106 ms	28596 KB	Output is correct
140	Correct	109 ms	28664 KB	Output is correct
141	Correct	124 ms	28684 KB	Output is correct
142	Correct	232 ms	59772 KB	Output is correct
143	Correct	260 ms	59696 KB	Output is correct
144	Correct	258 ms	59692 KB	Output is correct
145	Correct	245 ms	59724 KB	Output is correct
146	Correct	268 ms	59800 KB	Output is correct
147	Correct	242 ms	59772 KB	Output is correct
148	Correct	246 ms	59672 KB	Output is correct
149	Correct	278 ms	59768 KB	Output is correct
150	Correct	249 ms	59708 KB	Output is correct
151	Correct	300 ms	59768 KB	Output is correct
152	Correct	264 ms	59704 KB	Output is correct
153	Correct	285 ms	59768 KB	Output is correct
154	Correct	264 ms	59772 KB	Output is correct
155	Correct	281 ms	59700 KB	Output is correct
156	Correct	249 ms	59776 KB	Output is correct
157	Correct	275 ms	59716 KB	Output is correct
158	Correct	289 ms	59652 KB	Output is correct
159	Correct	260 ms	59652 KB	Output is correct
160	Correct	246 ms	59680 KB	Output is correct
161	Correct	260 ms	59728 KB	Output is correct
162	Correct	279 ms	59676 KB	Output is correct
163	Correct	251 ms	59776 KB	Output is correct
164	Correct	259 ms	59700 KB	Output is correct
165	Correct	249 ms	59772 KB	Output is correct
166	Correct	260 ms	59760 KB	Output is correct
167	Correct	262 ms	59700 KB	Output is correct

답안 #545930

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