#include <stdio.h>
#include <string.h>
#define N 5000
int max(int a, int b) { return a > b ? a : b; }
int main() {
static int aa[N + 1], dp[N + 1][N + 1], dq[N + 1];
int n, i, j, k, x, c, ans;
scanf("%d", &n);
for (i = 1; i <= n; i++) {
scanf("%d", &aa[i]);
aa[i] += aa[i - 1];
}
for (i = 1; i <= n; i++)
dp[0][i] = 0;
for (j = 1; j <= n; j++) {
for (i = 0; i < j; i++)
dq[i] = dp[i][j];
for (i = 1; i < j; i++)
dq[i] = max(dq[i], dq[i - 1]);
x = 0, c = 0;
for (i = j - 1, k = j + 1; k <= n; k++) {
dp[j][k] = x;
while (i >= 0 && aa[i] + aa[k] > aa[j] * 2)
i--;
if (i > 0 && aa[i] + aa[k] == aa[j] * 2)
x = max(x, dq[i - 1] + ++c);
}
}
ans = 0;
for (i = 0; i < n; i++)
ans = max(ans, dp[i][n]);
printf("%d\n", ans);
return 0;
}
Compilation message
cigle.c: In function 'main':
cigle.c:12:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
12 | scanf("%d", &n);
| ^~~~~~~~~~~~~~~
cigle.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%d", &aa[i]);
| ^~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
288 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
288 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
284 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
288 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
288 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
284 KB |
Output is correct |
| 10 |
Correct |
0 ms |
588 KB |
Output is correct |
| 11 |
Correct |
1 ms |
588 KB |
Output is correct |
| 12 |
Correct |
1 ms |
588 KB |
Output is correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| 14 |
Correct |
1 ms |
588 KB |
Output is correct |
| 15 |
Correct |
1 ms |
588 KB |
Output is correct |
| 16 |
Correct |
1 ms |
588 KB |
Output is correct |
| 17 |
Correct |
1 ms |
588 KB |
Output is correct |
| 18 |
Correct |
1 ms |
588 KB |
Output is correct |
| 19 |
Correct |
1 ms |
588 KB |
Output is correct |
| 20 |
Correct |
0 ms |
588 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 2 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 3 |
Correct |
2 ms |
2728 KB |
Output is correct |
| 4 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 6 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 7 |
Correct |
3 ms |
2704 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 9 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2764 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
288 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
288 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
284 KB |
Output is correct |
| 10 |
Correct |
0 ms |
588 KB |
Output is correct |
| 11 |
Correct |
1 ms |
588 KB |
Output is correct |
| 12 |
Correct |
1 ms |
588 KB |
Output is correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| 14 |
Correct |
1 ms |
588 KB |
Output is correct |
| 15 |
Correct |
1 ms |
588 KB |
Output is correct |
| 16 |
Correct |
1 ms |
588 KB |
Output is correct |
| 17 |
Correct |
1 ms |
588 KB |
Output is correct |
| 18 |
Correct |
1 ms |
588 KB |
Output is correct |
| 19 |
Correct |
1 ms |
588 KB |
Output is correct |
| 20 |
Correct |
0 ms |
588 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 22 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 23 |
Correct |
2 ms |
2728 KB |
Output is correct |
| 24 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 25 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 26 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 27 |
Correct |
3 ms |
2704 KB |
Output is correct |
| 28 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 29 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 30 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 31 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 32 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 34 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 35 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 37 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 38 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 39 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 40 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 41 |
Correct |
2 ms |
2792 KB |
Output is correct |
| 42 |
Correct |
2 ms |
2756 KB |
Output is correct |
| 43 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 44 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 45 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 46 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 47 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 48 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 49 |
Correct |
2 ms |
2776 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
288 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
288 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
0 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
284 KB |
Output is correct |
| 10 |
Correct |
0 ms |
588 KB |
Output is correct |
| 11 |
Correct |
1 ms |
588 KB |
Output is correct |
| 12 |
Correct |
1 ms |
588 KB |
Output is correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| 14 |
Correct |
1 ms |
588 KB |
Output is correct |
| 15 |
Correct |
1 ms |
588 KB |
Output is correct |
| 16 |
Correct |
1 ms |
588 KB |
Output is correct |
| 17 |
Correct |
1 ms |
588 KB |
Output is correct |
| 18 |
Correct |
1 ms |
588 KB |
Output is correct |
| 19 |
Correct |
1 ms |
588 KB |
Output is correct |
| 20 |
Correct |
0 ms |
588 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 22 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 23 |
Correct |
2 ms |
2728 KB |
Output is correct |
| 24 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 25 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 26 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 27 |
Correct |
3 ms |
2704 KB |
Output is correct |
| 28 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 29 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 30 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 31 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 32 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 34 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 35 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 37 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 38 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 39 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 40 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 41 |
Correct |
2 ms |
2792 KB |
Output is correct |
| 42 |
Correct |
2 ms |
2756 KB |
Output is correct |
| 43 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 44 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 45 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 46 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 47 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 48 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 49 |
Correct |
2 ms |
2776 KB |
Output is correct |
| 50 |
Correct |
221 ms |
67280 KB |
Output is correct |
| 51 |
Correct |
237 ms |
67404 KB |
Output is correct |
| 52 |
Correct |
223 ms |
67252 KB |
Output is correct |
| 53 |
Correct |
221 ms |
67372 KB |
Output is correct |
| 54 |
Correct |
229 ms |
67204 KB |
Output is correct |
| 55 |
Correct |
226 ms |
67216 KB |
Output is correct |
| 56 |
Correct |
254 ms |
67380 KB |
Output is correct |
| 57 |
Correct |
257 ms |
67204 KB |
Output is correct |
| 58 |
Correct |
260 ms |
67236 KB |
Output is correct |
| 59 |
Correct |
261 ms |
67264 KB |
Output is correct |
| 60 |
Correct |
254 ms |
67292 KB |
Output is correct |
| 61 |
Correct |
244 ms |
67256 KB |
Output is correct |
| 62 |
Correct |
240 ms |
67208 KB |
Output is correct |
| 63 |
Correct |
240 ms |
67236 KB |
Output is correct |
| 64 |
Correct |
234 ms |
67228 KB |
Output is correct |
| 65 |
Correct |
229 ms |
67276 KB |
Output is correct |
| 66 |
Correct |
232 ms |
67188 KB |
Output is correct |
| 67 |
Correct |
218 ms |
67268 KB |
Output is correct |
| 68 |
Correct |
216 ms |
67276 KB |
Output is correct |
| 69 |
Correct |
218 ms |
67196 KB |
Output is correct |
| 70 |
Correct |
247 ms |
67228 KB |
Output is correct |
| 71 |
Correct |
263 ms |
67236 KB |
Output is correct |
| 72 |
Correct |
249 ms |
67248 KB |
Output is correct |
