#include <stdio.h>
#include <string.h>
#define N 100000
long long max(long long a, long long b) { return a > b ? a : b; }
int main() {
static char cc[N + 1];
static long long dp[N + 1][4], dq[N + 1][4];
int n, i, a;
long long ans;
scanf("%d%s", &n, cc);
dp[0][0] = 1;
for (i = 0; i < n; i++) {
memcpy(dp[i + 1], dp[i], sizeof dp[i]);
if (cc[i] == 'J')
dp[i + 1][1] += dp[i + 1][0];
else if (cc[i] == 'O')
dp[i + 1][2] += dp[i + 1][1];
else
dp[i + 1][3] += dp[i + 1][2];
}
dq[n][3] = 1;
for (i = n - 1; i >= 0; i--) {
memcpy(dq[i], dq[i + 1], sizeof dq[i + 1]);
if (cc[i] == 'J')
dq[i][0] += dq[i][1];
else if (cc[i] == 'O')
dq[i][1] += dq[i][2];
else
dq[i][2] += dq[i][3];
}
ans = 0;
for (i = 0; i <= n; i++)
for (a = 0; a < 3; a++)
ans = max(ans, dp[n][3] + dp[i][a] * dq[i][a + 1]);
printf("%lld\n", ans);
return 0;
}
Compilation message
2016_ho_t2.c: In function 'main':
2016_ho_t2.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%d%s", &n, cc);
| ^~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
296 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 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 |
288 KB |
Output is correct |
| 8 |
Correct |
0 ms |
292 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
296 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
288 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
296 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 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 |
288 KB |
Output is correct |
| 8 |
Correct |
0 ms |
292 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
296 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
288 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
512 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
420 KB |
Output is correct |
| 19 |
Correct |
0 ms |
416 KB |
Output is correct |
| 20 |
Correct |
1 ms |
468 KB |
Output is correct |
| 21 |
Correct |
0 ms |
468 KB |
Output is correct |
| 22 |
Correct |
1 ms |
468 KB |
Output is correct |
| 23 |
Correct |
1 ms |
420 KB |
Output is correct |
| 24 |
Correct |
1 ms |
468 KB |
Output is correct |
| 25 |
Correct |
0 ms |
420 KB |
Output is correct |
| 26 |
Correct |
0 ms |
420 KB |
Output is correct |
| 27 |
Correct |
1 ms |
468 KB |
Output is correct |
| 28 |
Correct |
1 ms |
416 KB |
Output is correct |
| 29 |
Correct |
1 ms |
468 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
296 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 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 |
288 KB |
Output is correct |
| 8 |
Correct |
0 ms |
292 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
296 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
288 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
512 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
1 ms |
420 KB |
Output is correct |
| 19 |
Correct |
0 ms |
416 KB |
Output is correct |
| 20 |
Correct |
1 ms |
468 KB |
Output is correct |
| 21 |
Correct |
0 ms |
468 KB |
Output is correct |
| 22 |
Correct |
1 ms |
468 KB |
Output is correct |
| 23 |
Correct |
1 ms |
420 KB |
Output is correct |
| 24 |
Correct |
1 ms |
468 KB |
Output is correct |
| 25 |
Correct |
0 ms |
420 KB |
Output is correct |
| 26 |
Correct |
0 ms |
420 KB |
Output is correct |
| 27 |
Correct |
1 ms |
468 KB |
Output is correct |
| 28 |
Correct |
1 ms |
416 KB |
Output is correct |
| 29 |
Correct |
1 ms |
468 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| 31 |
Correct |
5 ms |
6740 KB |
Output is correct |
| 32 |
Correct |
5 ms |
6676 KB |
Output is correct |
| 33 |
Correct |
5 ms |
6700 KB |
Output is correct |
| 34 |
Correct |
6 ms |
6704 KB |
Output is correct |
| 35 |
Correct |
6 ms |
6740 KB |
Output is correct |
| 36 |
Correct |
6 ms |
6740 KB |
Output is correct |
| 37 |
Correct |
5 ms |
6708 KB |
Output is correct |
| 38 |
Correct |
5 ms |
6740 KB |
Output is correct |
| 39 |
Correct |
5 ms |
6740 KB |
Output is correct |
| 40 |
Correct |
5 ms |
6704 KB |
Output is correct |
| 41 |
Correct |
5 ms |
6736 KB |
Output is correct |
| 42 |
Correct |
5 ms |
6684 KB |
Output is correct |
| 43 |
Correct |
5 ms |
6700 KB |
Output is correct |
| 44 |
Correct |
5 ms |
6740 KB |
Output is correct |
| 45 |
Correct |
5 ms |
6740 KB |
Output is correct |
