답안 #500648

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
500648	2021-12-31T16:32:25 Z	rainboy	Tortoise (CEOI21_tortoise)	C	73 / 100	403 ms	391832 KB

tortoise

#include <stdio.h>
#include <string.h>

#define N	5000
#define INF	0x3f3f3f3f

int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }

int eval(int a, int b, int c) {
	return b - a * c;
}

int main() {
	static int aa[N], ll[N], rr[N], tt[N], dp[N][N * 2 + 1], dq[N][N * 2 + 1], dr[N * 2 + 1], qu[N * 2 + 1];
	int n, i, j, k, head, cnt, ans;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &aa[i]);
	for (i = 0; i < n; i++) {
		for (j = i - 1; j >= 0; j--)
			if (aa[j] == -1)
				break;
		ll[i] = j;
		for (j = i + 1; j < n; j++)
			if (aa[j] == -1)
				break;
		rr[i] = j;
		tt[i] = min(ll[i] == -1 ? INF : i - ll[i], rr[i] == n ? INF : rr[i] - i) * 2;
	}
	for (i = 0; i < n; i++) {
		memset(dp[i], 0x3f, (n * 2 + 1) * sizeof *dp[i]);
		memset(dq[i], 0x3f, (n * 2 + 1) * sizeof *dq[i]);
	}
	ans = 0;
	for (i = 0; i < n; i++)
		if (aa[i] > 0) {
			for (k = 0; k <= n * 2; k++) {
				if ((j = ll[i]) >= 0)
					dp[i][k] = min(dp[i][k], dq[j][k] + i - j);
				if ((j = rr[i]) < n)
					dp[i][k] = min(dp[i][k], dq[j][k] + j - i);
			}
			dp[i][1] = min(dp[i][1], i);
			head = cnt = 0;
			for (k = 0; k <= n * 2; k++) {
				if (dp[i][k] <= i * 2) {
					while (cnt && eval(qu[head + cnt - 1], dp[i][qu[head + cnt - 1]], tt[i]) >= eval(k, dp[i][k], tt[i]))
						cnt--;
					qu[head + cnt++] = k;
				}
				while (cnt && k - qu[head] >= aa[i])
					head++, cnt--;
				dr[k] = cnt == 0 ? INF : eval(qu[head], dp[i][qu[head]], tt[i]) + tt[i] * k;
			}
			for (k = 0; k <= n * 2; k++)
				dp[i][k] = dr[k];
			for (k = 0; k <= n * 2; k++) {
				int t = dp[i][k];

				if (t > i * 2)
					continue;
				ans = max(ans, k);
				if (k < n * 2) {
					if ((j = ll[i]) >= 0)
						dq[j][k + 1] = min(dq[j][k + 1], t + i - j);
					if ((j = rr[i]) < n)
						dq[j][k + 1] = min(dq[j][k + 1], t + j - i);
				}
			}
		} else
			for (k = 0; k <= n * 2; k++) {
				int t = dq[i][k];

				if (t == INF)
					continue;
				if ((j = rr[i]) < n)
					dq[j][k] = min(dq[j][k], t + j - i);
			}
	ans = -ans;
	for (i = 0; i < n; i++)
		if (aa[i] > 0)
			ans += aa[i];
	printf("%d\n", ans);
	return 0;
}

Compilation message

tortoise.c: In function 'main':
tortoise.c:18:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
tortoise.c:20:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	412 KB	Output is correct
8	Correct	0 ms	332 KB	Output is correct
9	Correct	1 ms	412 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	408 KB	Output is correct
14	Correct	0 ms	408 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	0 ms	404 KB	Output is correct
17	Correct	0 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	0 ms	332 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	412 KB	Output is correct
22	Correct	0 ms	332 KB	Output is correct
23	Correct	0 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	0 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	412 KB	Output is correct
8	Correct	0 ms	332 KB	Output is correct
9	Correct	1 ms	412 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	408 KB	Output is correct
14	Correct	0 ms	408 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	0 ms	404 KB	Output is correct
17	Correct	0 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	0 ms	332 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	412 KB	Output is correct
22	Correct	0 ms	332 KB	Output is correct
23	Correct	0 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	0 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	2 ms	3276 KB	Output is correct
28	Correct	2 ms	3916 KB	Output is correct
29	Correct	2 ms	3660 KB	Output is correct
30	Correct	2 ms	3404 KB	Output is correct
31	Correct	2 ms	3996 KB	Output is correct
32	Correct	1 ms	2764 KB	Output is correct
33	Correct	2 ms	3660 KB	Output is correct
34	Correct	3 ms	3404 KB	Output is correct
35	Correct	2 ms	4044 KB	Output is correct
36	Correct	2 ms	4044 KB	Output is correct
37	Correct	2 ms	4044 KB	Output is correct
38	Correct	2 ms	4044 KB	Output is correct
39	Correct	2 ms	4044 KB	Output is correct
40	Correct	2 ms	4044 KB	Output is correct
41	Correct	3 ms	4148 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	412 KB	Output is correct
8	Correct	0 ms	332 KB	Output is correct
9	Correct	1 ms	412 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	408 KB	Output is correct
14	Correct	0 ms	408 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	0 ms	404 KB	Output is correct
17	Correct	0 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	0 ms	332 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	412 KB	Output is correct
22	Correct	0 ms	332 KB	Output is correct
23	Correct	0 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	0 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	2 ms	3276 KB	Output is correct
28	Correct	2 ms	3916 KB	Output is correct
29	Correct	2 ms	3660 KB	Output is correct
30	Correct	2 ms	3404 KB	Output is correct
31	Correct	2 ms	3996 KB	Output is correct
32	Correct	1 ms	2764 KB	Output is correct
33	Correct	2 ms	3660 KB	Output is correct
34	Correct	3 ms	3404 KB	Output is correct
35	Correct	2 ms	4044 KB	Output is correct
36	Correct	2 ms	4044 KB	Output is correct
37	Correct	2 ms	4044 KB	Output is correct
38	Correct	2 ms	4044 KB	Output is correct
39	Correct	2 ms	4044 KB	Output is correct
40	Correct	2 ms	4044 KB	Output is correct
41	Correct	3 ms	4148 KB	Output is correct
42	Correct	1 ms	2508 KB	Output is correct
43	Correct	1 ms	2636 KB	Output is correct
44	Correct	2 ms	3076 KB	Output is correct
45	Correct	2 ms	3788 KB	Output is correct
46	Correct	2 ms	2892 KB	Output is correct
47	Correct	1 ms	2508 KB	Output is correct
48	Correct	2 ms	3404 KB	Output is correct
49	Correct	2 ms	2892 KB	Output is correct
50	Correct	2 ms	3660 KB	Output is correct
51	Correct	2 ms	3788 KB	Output is correct
52	Correct	1 ms	2636 KB	Output is correct
53	Correct	2 ms	3788 KB	Output is correct
54	Correct	3 ms	3788 KB	Output is correct
55	Correct	4 ms	3404 KB	Output is correct
56	Correct	2 ms	4044 KB	Output is correct
57	Correct	2 ms	2636 KB	Output is correct
58	Correct	3 ms	3708 KB	Output is correct
59	Correct	2 ms	2892 KB	Output is correct
60	Correct	3 ms	3404 KB	Output is correct
61	Correct	2 ms	3660 KB	Output is correct
62	Correct	2 ms	3740 KB	Output is correct

Subtask #4
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	412 KB	Output is correct
8	Correct	0 ms	332 KB	Output is correct
9	Correct	1 ms	412 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	408 KB	Output is correct
14	Correct	0 ms	408 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	0 ms	404 KB	Output is correct
17	Correct	0 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	0 ms	332 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	412 KB	Output is correct
22	Correct	0 ms	332 KB	Output is correct
23	Correct	0 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	0 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	2 ms	3276 KB	Output is correct
28	Correct	2 ms	3916 KB	Output is correct
29	Correct	2 ms	3660 KB	Output is correct
30	Correct	2 ms	3404 KB	Output is correct
31	Correct	2 ms	3996 KB	Output is correct
32	Correct	1 ms	2764 KB	Output is correct
33	Correct	2 ms	3660 KB	Output is correct
34	Correct	3 ms	3404 KB	Output is correct
35	Correct	2 ms	4044 KB	Output is correct
36	Correct	2 ms	4044 KB	Output is correct
37	Correct	2 ms	4044 KB	Output is correct
38	Correct	2 ms	4044 KB	Output is correct
39	Correct	2 ms	4044 KB	Output is correct
40	Correct	2 ms	4044 KB	Output is correct
41	Correct	3 ms	4148 KB	Output is correct
42	Correct	1 ms	2508 KB	Output is correct
43	Correct	1 ms	2636 KB	Output is correct
44	Correct	2 ms	3076 KB	Output is correct
45	Correct	2 ms	3788 KB	Output is correct
46	Correct	2 ms	2892 KB	Output is correct
47	Correct	1 ms	2508 KB	Output is correct
48	Correct	2 ms	3404 KB	Output is correct
49	Correct	2 ms	2892 KB	Output is correct
50	Correct	2 ms	3660 KB	Output is correct
51	Correct	2 ms	3788 KB	Output is correct
52	Correct	1 ms	2636 KB	Output is correct
53	Correct	2 ms	3788 KB	Output is correct
54	Correct	3 ms	3788 KB	Output is correct
55	Correct	4 ms	3404 KB	Output is correct
56	Correct	2 ms	4044 KB	Output is correct
57	Correct	2 ms	2636 KB	Output is correct
58	Correct	3 ms	3708 KB	Output is correct
59	Correct	2 ms	2892 KB	Output is correct
60	Correct	3 ms	3404 KB	Output is correct
61	Correct	2 ms	3660 KB	Output is correct
62	Correct	2 ms	3740 KB	Output is correct
63	Correct	237 ms	386852 KB	Output is correct
64	Correct	336 ms	390076 KB	Output is correct
65	Correct	249 ms	390468 KB	Output is correct
66	Correct	257 ms	386636 KB	Output is correct
67	Correct	257 ms	391764 KB	Output is correct
68	Correct	268 ms	384628 KB	Output is correct
69	Correct	269 ms	390492 KB	Output is correct
70	Correct	330 ms	390872 KB	Output is correct
71	Correct	377 ms	390972 KB	Output is correct
72	Correct	398 ms	385728 KB	Output is correct
73	Correct	383 ms	387440 KB	Output is correct
74	Correct	403 ms	388284 KB	Output is correct
75	Correct	220 ms	391428 KB	Output is correct
76	Correct	301 ms	385156 KB	Output is correct
77	Correct	373 ms	391072 KB	Output is correct
78	Correct	324 ms	391748 KB	Output is correct
79	Correct	294 ms	387268 KB	Output is correct
80	Correct	279 ms	386488 KB	Output is correct
81	Correct	284 ms	387916 KB	Output is correct
82	Correct	289 ms	391236 KB	Output is correct
83	Correct	311 ms	387220 KB	Output is correct
84	Correct	306 ms	387920 KB	Output is correct
85	Correct	321 ms	391348 KB	Output is correct
86	Correct	342 ms	391832 KB	Output is correct
87	Correct	326 ms	387220 KB	Output is correct
88	Correct	292 ms	386592 KB	Output is correct

Subtask #5
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	412 KB	Output is correct
8	Correct	0 ms	332 KB	Output is correct
9	Correct	1 ms	412 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	408 KB	Output is correct
14	Correct	0 ms	408 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	0 ms	404 KB	Output is correct
17	Correct	0 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	0 ms	332 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	412 KB	Output is correct
22	Correct	0 ms	332 KB	Output is correct
23	Correct	0 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	0 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	2 ms	3276 KB	Output is correct
28	Correct	2 ms	3916 KB	Output is correct
29	Correct	2 ms	3660 KB	Output is correct
30	Correct	2 ms	3404 KB	Output is correct
31	Correct	2 ms	3996 KB	Output is correct
32	Correct	1 ms	2764 KB	Output is correct
33	Correct	2 ms	3660 KB	Output is correct
34	Correct	3 ms	3404 KB	Output is correct
35	Correct	2 ms	4044 KB	Output is correct
36	Correct	2 ms	4044 KB	Output is correct
37	Correct	2 ms	4044 KB	Output is correct
38	Correct	2 ms	4044 KB	Output is correct
39	Correct	2 ms	4044 KB	Output is correct
40	Correct	2 ms	4044 KB	Output is correct
41	Correct	3 ms	4148 KB	Output is correct
42	Correct	1 ms	2508 KB	Output is correct
43	Correct	1 ms	2636 KB	Output is correct
44	Correct	2 ms	3076 KB	Output is correct
45	Correct	2 ms	3788 KB	Output is correct
46	Correct	2 ms	2892 KB	Output is correct
47	Correct	1 ms	2508 KB	Output is correct
48	Correct	2 ms	3404 KB	Output is correct
49	Correct	2 ms	2892 KB	Output is correct
50	Correct	2 ms	3660 KB	Output is correct
51	Correct	2 ms	3788 KB	Output is correct
52	Correct	1 ms	2636 KB	Output is correct
53	Correct	2 ms	3788 KB	Output is correct
54	Correct	3 ms	3788 KB	Output is correct
55	Correct	4 ms	3404 KB	Output is correct
56	Correct	2 ms	4044 KB	Output is correct
57	Correct	2 ms	2636 KB	Output is correct
58	Correct	3 ms	3708 KB	Output is correct
59	Correct	2 ms	2892 KB	Output is correct
60	Correct	3 ms	3404 KB	Output is correct
61	Correct	2 ms	3660 KB	Output is correct
62	Correct	2 ms	3740 KB	Output is correct
63	Correct	237 ms	386852 KB	Output is correct
64	Correct	336 ms	390076 KB	Output is correct
65	Correct	249 ms	390468 KB	Output is correct
66	Correct	257 ms	386636 KB	Output is correct
67	Correct	257 ms	391764 KB	Output is correct
68	Correct	268 ms	384628 KB	Output is correct
69	Correct	269 ms	390492 KB	Output is correct
70	Correct	330 ms	390872 KB	Output is correct
71	Correct	377 ms	390972 KB	Output is correct
72	Correct	398 ms	385728 KB	Output is correct
73	Correct	383 ms	387440 KB	Output is correct
74	Correct	403 ms	388284 KB	Output is correct
75	Correct	220 ms	391428 KB	Output is correct
76	Correct	301 ms	385156 KB	Output is correct
77	Correct	373 ms	391072 KB	Output is correct
78	Correct	324 ms	391748 KB	Output is correct
79	Correct	294 ms	387268 KB	Output is correct
80	Correct	279 ms	386488 KB	Output is correct
81	Correct	284 ms	387916 KB	Output is correct
82	Correct	289 ms	391236 KB	Output is correct
83	Correct	311 ms	387220 KB	Output is correct
84	Correct	306 ms	387920 KB	Output is correct
85	Correct	321 ms	391348 KB	Output is correct
86	Correct	342 ms	391832 KB	Output is correct
87	Correct	326 ms	387220 KB	Output is correct
88	Correct	292 ms	386592 KB	Output is correct
89	Runtime error	7 ms	460 KB	Execution killed with signal 11
90	Halted	0 ms	0 KB	-

답안 #500648

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 10.0 / 10.0

Subtask #3 30.0 / 30.0

Subtask #4 25.0 / 25.0

Subtask #5 0 / 27.0

Subtask #1
8.0 / 8.0

Subtask #2
10.0 / 10.0

Subtask #3
30.0 / 30.0

Subtask #4
25.0 / 25.0

Subtask #5
0 / 27.0