| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 43150 |
2018-03-09T14:50:30 Z |
cheater2k |
Bomb (IZhO17_bomb) |
C++14 |
|
487 ms |
131072 KB |
/*
5 5
00111
00111
11111
11110
11100
*/
#include <bits/stdc++.h>
using namespace std;
#define left __left
#define right __right
const int N = 2505;
int n, m, nrow, ncol;
int left[N][N];
int right[N][N];
int up[N][N];
int down[N][N];
char a[N][N];
int c[N];
int main() {
ios_base::sync_with_stdio(false); cin.tie(0);
cin >> n >> m;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
cin >> a[i][j];
}
}
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) left[i][j] = a[i][j] == '1' ? left[i][j - 1] + 1 : 0;
for (int j = m; j >= 1; --j) right[i][j] = a[i][j] == '1' ? right[i][j + 1] + 1 : 0;
}
for (int j = 1; j <= m; ++j) {
for (int i = 1; i <= n; ++i) up[i][j] = a[i][j] == '1' ? up[i - 1][j] + 1 : 0;
for (int i = n; i >= 1; --i) down[i][j] = a[i][j] == '1' ? down[i + 1][j] + 1 : 0;
}
nrow = n, ncol = m;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) if (a[i][j] == '1') {
nrow = min(nrow, up[i][j] + down[i][j] - 1);
ncol = min(ncol, left[i][j] + right[i][j] - 1);
}
}
int res = 0;
for (int r = 1; r <= nrow; ++r) c[r] = ncol;
for (int i = 1; i <= n; ++i) for (int j = 1; j <= m; ++j) {
if (a[i][j] != '1') continue;
int cur = ncol;
if (down[i][j] == 1) {
for (int k = i; k >= i - nrow + 1; --k) {
if (left[i][j] == 1) cur = min(cur, right[k][j]), c[i - k + 1] = min(c[i - k + 1], cur);
if (right[i][j] == 1) cur = min(cur, left[k][j]), c[i - k + 1] = min(c[i - k + 1], cur);
}
} else if (up[i][j] == 1) {
for (int k = i; k <= i + nrow - 1; ++k) {
if (left[i][j] == 1) cur = min(cur, right[k][j]), c[k - i + 1] = min(c[k - i + 1], cur);
if (right[i][j] == 1) cur = min(cur, left[k][j]), c[k - i + 1] = min(c[k - i + 1], cur);
}
}
}
for (int r = 1; r <= nrow; ++r) res = max(res, r * c[r]);
cout << res << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
868 KB |
Output is correct |
| 3 |
Correct |
37 ms |
46872 KB |
Output is correct |
| 4 |
Correct |
37 ms |
46872 KB |
Output is correct |
| 5 |
Correct |
1 ms |
46872 KB |
Output is correct |
| 6 |
Correct |
1 ms |
46872 KB |
Output is correct |
| 7 |
Correct |
1 ms |
46872 KB |
Output is correct |
| 8 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 9 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 10 |
Correct |
1 ms |
46872 KB |
Output is correct |
| 11 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 12 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 13 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 14 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 15 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 16 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 17 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 18 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 19 |
Correct |
3 ms |
46872 KB |
Output is correct |
| 20 |
Correct |
3 ms |
46872 KB |
Output is correct |
| 21 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 22 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 23 |
Correct |
3 ms |
46872 KB |
Output is correct |
| 24 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 25 |
Correct |
3 ms |
46872 KB |
Output is correct |
| 26 |
Correct |
3 ms |
46872 KB |
Output is correct |
| 27 |
Correct |
8 ms |
46872 KB |
Output is correct |
| 28 |
Correct |
8 ms |
46872 KB |
Output is correct |
| 29 |
Correct |
12 ms |
46872 KB |
Output is correct |
| 30 |
Correct |
13 ms |
46872 KB |
Output is correct |
| 31 |
Correct |
10 ms |
46872 KB |
Output is correct |
| 32 |
Correct |
14 ms |
46872 KB |
Output is correct |
| 33 |
Correct |
14 ms |
46872 KB |
Output is correct |
| 34 |
Correct |
8 ms |
46872 KB |
Output is correct |
| 35 |
Correct |
14 ms |
46872 KB |
Output is correct |
| 36 |
Correct |
16 ms |
46872 KB |
Output is correct |
| 37 |
Correct |
2 ms |
46872 KB |
Output is correct |
| 38 |
Correct |
465 ms |
112500 KB |
Output is correct |
| 39 |
Correct |
2 ms |
112500 KB |
Output is correct |
| 40 |
Incorrect |
58 ms |
112500 KB |
Output isn't correct |
| 41 |
Correct |
2 ms |
112500 KB |
Output is correct |
| 42 |
Correct |
3 ms |
112500 KB |
Output is correct |
| 43 |
Correct |
469 ms |
119628 KB |
Output is correct |
| 44 |
Correct |
17 ms |
119628 KB |
Output is correct |
| 45 |
Correct |
474 ms |
126008 KB |
Output is correct |
| 46 |
Correct |
456 ms |
131072 KB |
Output is correct |
| 47 |
Correct |
452 ms |
131072 KB |
Output is correct |
| 48 |
Correct |
458 ms |
131072 KB |
Output is correct |
| 49 |
Correct |
449 ms |
131072 KB |
Output is correct |
| 50 |
Correct |
438 ms |
131072 KB |
Output is correct |
| 51 |
Correct |
454 ms |
131072 KB |
Output is correct |
| 52 |
Correct |
448 ms |
131072 KB |
Output is correct |
| 53 |
Correct |
448 ms |
131072 KB |
Output is correct |
| 54 |
Correct |
423 ms |
131072 KB |
Output is correct |
| 55 |
Correct |
427 ms |
131072 KB |
Output is correct |
| 56 |
Correct |
465 ms |
131072 KB |
Output is correct |
| 57 |
Correct |
452 ms |
131072 KB |
Output is correct |
| 58 |
Correct |
441 ms |
131072 KB |
Output is correct |
| 59 |
Correct |
425 ms |
131072 KB |
Output is correct |
| 60 |
Correct |
445 ms |
131072 KB |
Output is correct |
| 61 |
Correct |
462 ms |
131072 KB |
Output is correct |
| 62 |
Correct |
487 ms |
131072 KB |
Output is correct |
| 63 |
Correct |
456 ms |
131072 KB |
Output is correct |
| 64 |
Correct |
435 ms |
131072 KB |
Output is correct |
| 65 |
Correct |
434 ms |
131072 KB |
Output is correct |
| 66 |
Correct |
450 ms |
131072 KB |
Output is correct |
| 67 |
Correct |
454 ms |
131072 KB |
Output is correct |
| 68 |
Correct |
458 ms |
131072 KB |
Output is correct |
| 69 |
Correct |
424 ms |
131072 KB |
Output is correct |
| 70 |
Correct |
273 ms |
131072 KB |
Output is correct |
| 71 |
Correct |
435 ms |
131072 KB |
Output is correct |
| 72 |
Correct |
443 ms |
131072 KB |
Output is correct |
| 73 |
Correct |
421 ms |
131072 KB |
Output is correct |
| 74 |
Correct |
424 ms |
131072 KB |
Output is correct |
| 75 |
Correct |
440 ms |
131072 KB |
Output is correct |
| 76 |
Correct |
438 ms |
131072 KB |
Output is correct |
| 77 |
Correct |
450 ms |
131072 KB |
Output is correct |
| 78 |
Correct |
438 ms |
131072 KB |
Output is correct |
| 79 |
Correct |
420 ms |
131072 KB |
Output is correct |
| 80 |
Correct |
423 ms |
131072 KB |
Output is correct |
| 81 |
Correct |
429 ms |
131072 KB |
Output is correct |
| 82 |
Correct |
443 ms |
131072 KB |
Output is correct |
| 83 |
Correct |
438 ms |
131072 KB |
Output is correct |
| 84 |
Correct |
439 ms |
131072 KB |
Output is correct |
| 85 |
Correct |
430 ms |
131072 KB |
Output is correct |
| 86 |
Correct |
447 ms |
131072 KB |
Output is correct |
| 87 |
Correct |
430 ms |
131072 KB |
Output is correct |
| 88 |
Correct |
428 ms |
131072 KB |
Output is correct |
| 89 |
Correct |
424 ms |
131072 KB |
Output is correct |
| 90 |
Correct |
272 ms |
131072 KB |
Output is correct |
| 91 |
Correct |
428 ms |
131072 KB |
Output is correct |
| 92 |
Correct |
428 ms |
131072 KB |
Output is correct |
| 93 |
Correct |
447 ms |
131072 KB |
Output is correct |
| 94 |
Correct |
432 ms |
131072 KB |
Output is correct |
| 95 |
Correct |
433 ms |
131072 KB |
Output is correct |
| 96 |
Correct |
426 ms |
131072 KB |
Output is correct |
| 97 |
Correct |
449 ms |
131072 KB |
Output is correct |
| 98 |
Correct |
429 ms |
131072 KB |
Output is correct |
| 99 |
Correct |
441 ms |
131072 KB |
Output is correct |
| 100 |
Correct |
453 ms |
131072 KB |
Output is correct |
