답안 #1013586

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1013586	2024-07-03T16:50:14 Z	rainboy	Trains (BOI24_trains)	C	100 / 100	121 ms	127432 KB

Main

#include <stdio.h>

#define N	100000
#define D	316	/* D = floor(sqrt(N)) */
#define MD	1000000007

int main() {
	static int dd[N], ll[N], dp[N], dq[N][D + 1];
	int n, i, j, d, l, k;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d%d", &dd[i], &ll[i]);
	for (i = n - 1; i >= 0; i--) {
		d = dd[i], l = ll[i];
		if (d == 0 || l == 0)
			dp[i] = 1;
		else if (d <= D)
			dp[i] = ((i + d < n ? dq[i + d][d] : 0) - (l < (n - 1 - i) / d ? dq[i + d * (l + 1)][d] : 0) + 1 + MD) % MD;
		else {
			dp[i] = 1;
			for (k = 1; k <= l && (j = i + d * k) < n; k++)
				dp[i] = (dp[i] + dp[j]) % MD;
		}
		for (d = 1; d <= D; d++)
			dq[i][d] = ((i + d < n ? dq[i + d][d] : 0) + dp[i]) % MD;
	}
	printf("%d\n", dp[0]);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:11:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:13:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d%d", &dd[i], &ll[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	344 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct

Subtask #2
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	344 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	9 ms	10844 KB	Output is correct
21	Correct	5 ms	3932 KB	Output is correct
22	Correct	12 ms	12928 KB	Output is correct
23	Correct	7 ms	8536 KB	Output is correct
24	Correct	5 ms	5464 KB	Output is correct
25	Correct	9 ms	11528 KB	Output is correct
26	Correct	5 ms	5980 KB	Output is correct
27	Correct	9 ms	11100 KB	Output is correct
28	Correct	11 ms	12924 KB	Output is correct
29	Correct	11 ms	12892 KB	Output is correct
30	Correct	11 ms	12900 KB	Output is correct
31	Correct	11 ms	12892 KB	Output is correct
32	Correct	11 ms	12892 KB	Output is correct
33	Correct	10 ms	12772 KB	Output is correct
34	Correct	10 ms	12892 KB	Output is correct
35	Correct	12 ms	12892 KB	Output is correct
36	Correct	11 ms	12892 KB	Output is correct

Subtask #3
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	7 ms	8472 KB	Output is correct
3	Correct	5 ms	5876 KB	Output is correct
4	Correct	9 ms	11100 KB	Output is correct
5	Correct	79 ms	97364 KB	Output is correct
6	Correct	96 ms	126356 KB	Output is correct
7	Correct	107 ms	126424 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	11 ms	12888 KB	Output is correct
12	Correct	105 ms	126800 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	10 ms	12892 KB	Output is correct
15	Correct	95 ms	126736 KB	Output is correct

Subtask #4
34.0 / 34.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	61176 KB	Output is correct
2	Correct	43 ms	50928 KB	Output is correct
3	Correct	104 ms	126808 KB	Output is correct
4	Correct	71 ms	90960 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	10 ms	12892 KB	Output is correct
8	Correct	103 ms	126812 KB	Output is correct

Subtask #5
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	344 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	9 ms	10844 KB	Output is correct
21	Correct	5 ms	3932 KB	Output is correct
22	Correct	12 ms	12928 KB	Output is correct
23	Correct	7 ms	8536 KB	Output is correct
24	Correct	5 ms	5464 KB	Output is correct
25	Correct	9 ms	11528 KB	Output is correct
26	Correct	5 ms	5980 KB	Output is correct
27	Correct	9 ms	11100 KB	Output is correct
28	Correct	11 ms	12924 KB	Output is correct
29	Correct	11 ms	12892 KB	Output is correct
30	Correct	11 ms	12900 KB	Output is correct
31	Correct	11 ms	12892 KB	Output is correct
32	Correct	11 ms	12892 KB	Output is correct
33	Correct	10 ms	12772 KB	Output is correct
34	Correct	10 ms	12892 KB	Output is correct
35	Correct	12 ms	12892 KB	Output is correct
36	Correct	11 ms	12892 KB	Output is correct
37	Correct	0 ms	344 KB	Output is correct
38	Correct	7 ms	8472 KB	Output is correct
39	Correct	5 ms	5876 KB	Output is correct
40	Correct	9 ms	11100 KB	Output is correct
41	Correct	79 ms	97364 KB	Output is correct
42	Correct	96 ms	126356 KB	Output is correct
43	Correct	107 ms	126424 KB	Output is correct
44	Correct	0 ms	600 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	0 ms	348 KB	Output is correct
47	Correct	11 ms	12888 KB	Output is correct
48	Correct	105 ms	126800 KB	Output is correct
49	Correct	0 ms	344 KB	Output is correct
50	Correct	10 ms	12892 KB	Output is correct
51	Correct	95 ms	126736 KB	Output is correct
52	Correct	53 ms	61176 KB	Output is correct
53	Correct	43 ms	50928 KB	Output is correct
54	Correct	104 ms	126808 KB	Output is correct
55	Correct	71 ms	90960 KB	Output is correct
56	Correct	0 ms	344 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	10 ms	12892 KB	Output is correct
59	Correct	103 ms	126812 KB	Output is correct
60	Correct	89 ms	105556 KB	Output is correct
61	Correct	97 ms	126544 KB	Output is correct
62	Correct	99 ms	126120 KB	Output is correct
63	Correct	109 ms	126292 KB	Output is correct
64	Correct	113 ms	127432 KB	Output is correct
65	Correct	121 ms	126752 KB	Output is correct
66	Correct	100 ms	126652 KB	Output is correct
67	Correct	100 ms	127056 KB	Output is correct
68	Correct	104 ms	126560 KB	Output is correct
69	Correct	111 ms	126288 KB	Output is correct
70	Correct	121 ms	126552 KB	Output is correct
71	Correct	98 ms	126428 KB	Output is correct
72	Correct	98 ms	126484 KB	Output is correct

답안 #1013586

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 13.0 / 13.0

Subtask #3 16.0 / 16.0

Subtask #4 34.0 / 34.0

Subtask #5 29.0 / 29.0

Subtask #1
8.0 / 8.0

Subtask #2
13.0 / 13.0

Subtask #3
16.0 / 16.0

Subtask #4
34.0 / 34.0

Subtask #5
29.0 / 29.0