#include <stdio.h>
#define N 300
#define K 20
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
int solve(char *cc, int n) {
static int xx[N + 1];
int i, a, b, l, r;
xx[0] = 0;
for (i = 0; i < n; i++)
xx[i + 1] = xx[i] + (cc[i] == '(' ? 1 : -1);
if (xx[n] % 2 != 0)
return 0;
for (l = 0; l <= n; l++)
if (xx[l] < 0)
break;
l--;
for (r = n; r >= 0; r--)
if (xx[r] - xx[n] < 0)
break;
r++;
a = xx[0];
for (i = 0; i <= l; i++)
a = max(a, xx[i]);
b = xx[n];
for (i = r; i <= n; i++)
b = max(b, xx[i]);
if (l == n && r == 0)
return 1;
else if (l == n) {
for (i = n; i >= 0; i--) {
if ((b - xx[n] / 2) * 2 - xx[i] < 0)
return 0;
if (b - xx[i] == xx[n] / 2)
return 1;
}
return 0;
} else if (r == 0) {
for (i = 0; i <= n; i++) {
if (a * 2 - xx[i] < 0)
return 0;
if (xx[i] - a == xx[n] / 2)
return 1;
}
return 0;
} else {
for (i = l; i <= r; i++)
if (min(a, b - xx[n] / 2) * 2 - xx[i] < 0)
return 0;
return 1;
}
}
int main() {
static char cc[N + 1];
static int ii[K];
int n, k, h, i, b, ans;
scanf("%d%s", &n, cc);
k = 0;
for (i = 0; i < n; i++)
if (cc[i] == 'x')
ii[k++] = i;
ans = 0;
for (b = 0; b < 1 << k; b++) {
for (h = 0; h < k; h++)
cc[ii[h]] = (b & 1 << h) == 0 ? '(' : ')';
if (solve(cc, n))
ans++;
}
printf("%d\n", ans);
return 0;
}
Compilation message
securitygate.c: In function 'main':
securitygate.c:63:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
63 | scanf("%d%s", &n, cc);
| ^~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
280 KB |
Output is correct |
| 4 |
Correct |
0 ms |
284 KB |
Output is correct |
| 5 |
Correct |
0 ms |
284 KB |
Output is correct |
| 6 |
Correct |
0 ms |
284 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
280 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
280 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
280 KB |
Output is correct |
| 4 |
Correct |
0 ms |
284 KB |
Output is correct |
| 5 |
Correct |
0 ms |
284 KB |
Output is correct |
| 6 |
Correct |
0 ms |
284 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
280 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
280 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
284 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 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 |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
284 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
0 ms |
212 KB |
Output is correct |
| 31 |
Correct |
2 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
280 KB |
Output is correct |
| 4 |
Correct |
0 ms |
284 KB |
Output is correct |
| 5 |
Correct |
0 ms |
284 KB |
Output is correct |
| 6 |
Correct |
0 ms |
284 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
280 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
280 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
284 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 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 |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
284 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
0 ms |
212 KB |
Output is correct |
| 31 |
Correct |
2 ms |
212 KB |
Output is correct |
| 32 |
Correct |
6 ms |
212 KB |
Output is correct |
| 33 |
Correct |
2 ms |
212 KB |
Output is correct |
| 34 |
Correct |
139 ms |
264 KB |
Output is correct |
| 35 |
Correct |
5 ms |
212 KB |
Output is correct |
| 36 |
Correct |
11 ms |
280 KB |
Output is correct |
| 37 |
Correct |
67 ms |
272 KB |
Output is correct |
| 38 |
Correct |
241 ms |
336 KB |
Output is correct |
| 39 |
Correct |
5 ms |
212 KB |
Output is correct |
| 40 |
Correct |
312 ms |
264 KB |
Output is correct |
| 41 |
Correct |
322 ms |
264 KB |
Output is correct |
| 42 |
Correct |
259 ms |
260 KB |
Output is correct |
| 43 |
Correct |
162 ms |
264 KB |
Output is correct |
| 44 |
Correct |
21 ms |
276 KB |
Output is correct |
| 45 |
Correct |
333 ms |
264 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
280 KB |
Output is correct |
| 4 |
Correct |
0 ms |
284 KB |
Output is correct |
| 5 |
Correct |
0 ms |
284 KB |
Output is correct |
| 6 |
Correct |
0 ms |
284 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
280 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
280 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
284 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 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 |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
284 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
0 ms |
212 KB |
Output is correct |
| 31 |
Correct |
2 ms |
212 KB |
Output is correct |
| 32 |
Correct |
6 ms |
212 KB |
Output is correct |
| 33 |
Correct |
2 ms |
212 KB |
Output is correct |
| 34 |
Correct |
139 ms |
264 KB |
Output is correct |
| 35 |
Correct |
5 ms |
212 KB |
Output is correct |
| 36 |
Correct |
11 ms |
280 KB |
Output is correct |
| 37 |
Correct |
67 ms |
272 KB |
Output is correct |
| 38 |
Correct |
241 ms |
336 KB |
Output is correct |
| 39 |
Correct |
5 ms |
212 KB |
Output is correct |
| 40 |
Correct |
312 ms |
264 KB |
Output is correct |
| 41 |
Correct |
322 ms |
264 KB |
Output is correct |
| 42 |
Correct |
259 ms |
260 KB |
Output is correct |
| 43 |
Correct |
162 ms |
264 KB |
Output is correct |
| 44 |
Correct |
21 ms |
276 KB |
Output is correct |
| 45 |
Correct |
333 ms |
264 KB |
Output is correct |
| 46 |
Correct |
1 ms |
212 KB |
Output is correct |
| 47 |
Correct |
0 ms |
212 KB |
Output is correct |
| 48 |
Runtime error |
1 ms |
340 KB |
Execution killed with signal 11 |
| 49 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
280 KB |
Output is correct |
| 4 |
Correct |
0 ms |
284 KB |
Output is correct |
| 5 |
Correct |
0 ms |
284 KB |
Output is correct |
| 6 |
Correct |
0 ms |
284 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
280 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
280 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
284 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 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 |
0 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
284 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
0 ms |
212 KB |
Output is correct |
| 31 |
Correct |
2 ms |
212 KB |
Output is correct |
| 32 |
Correct |
6 ms |
212 KB |
Output is correct |
| 33 |
Correct |
2 ms |
212 KB |
Output is correct |
| 34 |
Correct |
139 ms |
264 KB |
Output is correct |
| 35 |
Correct |
5 ms |
212 KB |
Output is correct |
| 36 |
Correct |
11 ms |
280 KB |
Output is correct |
| 37 |
Correct |
67 ms |
272 KB |
Output is correct |
| 38 |
Correct |
241 ms |
336 KB |
Output is correct |
| 39 |
Correct |
5 ms |
212 KB |
Output is correct |
| 40 |
Correct |
312 ms |
264 KB |
Output is correct |
| 41 |
Correct |
322 ms |
264 KB |
Output is correct |
| 42 |
Correct |
259 ms |
260 KB |
Output is correct |
| 43 |
Correct |
162 ms |
264 KB |
Output is correct |
| 44 |
Correct |
21 ms |
276 KB |
Output is correct |
| 45 |
Correct |
333 ms |
264 KB |
Output is correct |
| 46 |
Correct |
1 ms |
212 KB |
Output is correct |
| 47 |
Correct |
0 ms |
212 KB |
Output is correct |
| 48 |
Runtime error |
1 ms |
340 KB |
Execution killed with signal 11 |
| 49 |
Halted |
0 ms |
0 KB |
- |
