#include <stdio.h>
#include <string.h>
#define N 2000
#define INF 0x7fffffff
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
int main() {
static int dp[N + N + 1], dq[N + N + 1];
int n, i, s, t, ans;
scanf("%d", &n);
for (s = -n; s <= n; s++)
dp[n + s] = -INF;
dp[n + 1] = 0;
for (i = 0; i < n; i++) {
int a, b;
scanf("%d%d", &a, &b), a--;
memcpy(dq, dp, (n * 2 + 1) * sizeof *dp);
for (s = -n; s <= n; s++) {
int x = dq[n + s];
if (x == -INF)
continue;
t = min(s + a, n);
dp[n + t] = max(dp[n + t], x + b);
}
}
ans = -INF;
for (s = 0; s <= n; s++)
ans = max(ans, dp[n + s]);
printf("%d\n", ans);
return 0;
}
Compilation message
straps.c: In function 'main':
straps.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%d", &n);
| ^~~~~~~~~~~~~~~
straps.c:21:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
21 | scanf("%d%d", &a, &b), a--;
| ^~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
292 KB |
Output is correct |
| 3 |
Correct |
1 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 |
296 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
292 KB |
Output is correct |
| 9 |
Correct |
0 ms |
296 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
296 KB |
Output is correct |
| 12 |
Correct |
0 ms |
340 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
296 KB |
Output is correct |
| 17 |
Correct |
0 ms |
300 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
296 KB |
Output is correct |
| 20 |
Correct |
0 ms |
212 KB |
Output is correct |
| 21 |
Correct |
0 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
0 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
300 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
5 ms |
300 KB |
Output is correct |
| 9 |
Correct |
3 ms |
212 KB |
Output is correct |
| 10 |
Correct |
3 ms |
212 KB |
Output is correct |
| 11 |
Correct |
3 ms |
212 KB |
Output is correct |
| 12 |
Correct |
11 ms |
436 KB |
Output is correct |
| 13 |
Correct |
12 ms |
308 KB |
Output is correct |
| 14 |
Correct |
14 ms |
212 KB |
Output is correct |
| 15 |
Correct |
10 ms |
340 KB |
Output is correct |
| 16 |
Correct |
10 ms |
336 KB |
Output is correct |
| 17 |
Correct |
11 ms |
332 KB |
Output is correct |
| 18 |
Correct |
10 ms |
340 KB |
Output is correct |
| 19 |
Correct |
11 ms |
332 KB |
Output is correct |
| 20 |
Correct |
10 ms |
308 KB |
Output is correct |
| 21 |
Correct |
13 ms |
336 KB |
Output is correct |
| 22 |
Correct |
10 ms |
336 KB |
Output is correct |
| 23 |
Correct |
14 ms |
332 KB |
Output is correct |
| 24 |
Correct |
10 ms |
212 KB |
Output is correct |
| 25 |
Correct |
13 ms |
212 KB |
Output is correct |
| 26 |
Correct |
11 ms |
332 KB |
Output is correct |
| 27 |
Correct |
13 ms |
328 KB |
Output is correct |
| 28 |
Correct |
10 ms |
304 KB |
Output is correct |
| 29 |
Correct |
19 ms |
304 KB |
Output is correct |
| 30 |
Correct |
20 ms |
212 KB |
Output is correct |
| 31 |
Correct |
21 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
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 |
1 ms |
224 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
288 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
2 ms |
212 KB |
Output is correct |
| 10 |
Correct |
3 ms |
212 KB |
Output is correct |
| 11 |
Correct |
3 ms |
212 KB |
Output is correct |
| 12 |
Correct |
3 ms |
212 KB |
Output is correct |
| 13 |
Correct |
3 ms |
320 KB |
Output is correct |
| 14 |
Correct |
3 ms |
304 KB |
Output is correct |
| 15 |
Correct |
4 ms |
212 KB |
Output is correct |
| 16 |
Correct |
3 ms |
304 KB |
Output is correct |
| 17 |
Correct |
12 ms |
340 KB |
Output is correct |
| 18 |
Correct |
14 ms |
332 KB |
Output is correct |
| 19 |
Correct |
11 ms |
340 KB |
Output is correct |
| 20 |
Correct |
9 ms |
212 KB |
Output is correct |
| 21 |
Correct |
9 ms |
340 KB |
Output is correct |
| 22 |
Correct |
9 ms |
308 KB |
Output is correct |
| 23 |
Correct |
9 ms |
332 KB |
Output is correct |
| 24 |
Correct |
10 ms |
340 KB |
Output is correct |
| 25 |
Correct |
9 ms |
336 KB |
Output is correct |
| 26 |
Correct |
9 ms |
212 KB |
Output is correct |
| 27 |
Correct |
9 ms |
340 KB |
Output is correct |
| 28 |
Correct |
9 ms |
340 KB |
Output is correct |
| 29 |
Correct |
10 ms |
332 KB |
Output is correct |
| 30 |
Correct |
9 ms |
308 KB |
Output is correct |
| 31 |
Correct |
10 ms |
332 KB |
Output is correct |
| 32 |
Correct |
9 ms |
340 KB |
Output is correct |
| 33 |
Correct |
13 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
336 KB |
Output is correct |
| 2 |
Correct |
12 ms |
336 KB |
Output is correct |
| 3 |
Correct |
11 ms |
340 KB |
Output is correct |
| 4 |
Correct |
10 ms |
340 KB |
Output is correct |
| 5 |
Correct |
12 ms |
336 KB |
Output is correct |
| 6 |
Correct |
12 ms |
332 KB |
Output is correct |
| 7 |
Correct |
12 ms |
336 KB |
Output is correct |
| 8 |
Correct |
13 ms |
332 KB |
Output is correct |
| 9 |
Correct |
12 ms |
212 KB |
Output is correct |
| 10 |
Correct |
12 ms |
336 KB |
Output is correct |
| 11 |
Correct |
12 ms |
308 KB |
Output is correct |
| 12 |
Correct |
17 ms |
212 KB |
Output is correct |
| 13 |
Correct |
13 ms |
308 KB |
Output is correct |
| 14 |
Correct |
17 ms |
336 KB |
Output is correct |
| 15 |
Correct |
13 ms |
328 KB |
Output is correct |
| 16 |
Correct |
12 ms |
336 KB |
Output is correct |
| 17 |
Correct |
13 ms |
340 KB |
Output is correct |
| 18 |
Correct |
15 ms |
368 KB |
Output is correct |
| 19 |
Correct |
14 ms |
212 KB |
Output is correct |
| 20 |
Correct |
15 ms |
340 KB |
Output is correct |
| 21 |
Correct |
14 ms |
340 KB |
Output is correct |
| 22 |
Correct |
16 ms |
336 KB |
Output is correct |
| 23 |
Correct |
15 ms |
304 KB |
Output is correct |
| 24 |
Correct |
15 ms |
340 KB |
Output is correct |
| 25 |
Correct |
11 ms |
340 KB |
Output is correct |
