#include "bits/stdc++.h"
using namespace std;
using ll = long long;
const int inf = 1e9, N = 1e6 + 5;
int main() {
cin.tie(0)->sync_with_stdio(false);
#ifdef sunnatov
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#else
// freopen("bomb.in", "r", stdin);
// freopen("bomb.out", "w", stdout);
#endif
int n, m;
cin >> n >> m;
vector<vector<char>> a(n + 1, vector<char>(m + 1));
vector<vector<int>> pref(n + 1, vector<int>(m + 1));
for (int i = 1; i <= n; i++) for (int j = 1; j <= m; j++) {
cin >> a[i][j];
pref[i][j] = pref[i][j - 1] + pref[i - 1][j] - pref[i - 1][j - 1] + (int) (a[i][j] == '1');
}
auto get_sum = [&](int x1, int y1, int x2, int y2) {
return pref[x2][y2] - pref[x2][y1 - 1] - pref[x1 - 1][y2] + pref[x1 - 1][y1 - 1];
};
auto get = [&](int h) {
int mn = m;
vector<int> last(m + 1, -inf);
for (int i = 1; i <= n; i++) {
int cnt = 0;
for (int j = 1; j <= m; j++) {
if (a[i][j] == '0') {
if (cnt > 0) mn = min(mn, cnt);
cnt = 0;
continue;
}
if (i + h - 1 > n or get_sum(i, j, i + h - 1, j) != h) {
if (i - last[j] >= h) return 0;
continue;
}
last[j] = i;
cnt++;
}
if (cnt > 0) mn = min(mn, cnt);
}
return mn;
};
int ans = 0;
for (int i = 1; i <= n; i++) ans = max(ans, get(i) * i);
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
500 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
3 ms |
604 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 24 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 25 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
3 ms |
860 KB |
Output is correct |
| 28 |
Correct |
3 ms |
860 KB |
Output is correct |
| 29 |
Incorrect |
23 ms |
1356 KB |
Output isn't correct |
| 30 |
Incorrect |
29 ms |
1372 KB |
Output isn't correct |
| 31 |
Incorrect |
20 ms |
1112 KB |
Output isn't correct |
| 32 |
Incorrect |
27 ms |
1260 KB |
Output isn't correct |
| 33 |
Incorrect |
42 ms |
1372 KB |
Output isn't correct |
| 34 |
Correct |
2 ms |
868 KB |
Output is correct |
| 35 |
Incorrect |
9 ms |
1276 KB |
Output isn't correct |
| 36 |
Correct |
18 ms |
1368 KB |
Output is correct |
| 37 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 38 |
Execution timed out |
1068 ms |
31068 KB |
Time limit exceeded |
| 39 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 40 |
Incorrect |
497 ms |
4296 KB |
Output isn't correct |
| 41 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 42 |
Incorrect |
2 ms |
600 KB |
Output isn't correct |
| 43 |
Execution timed out |
1091 ms |
31076 KB |
Time limit exceeded |
| 44 |
Incorrect |
76 ms |
1368 KB |
Output isn't correct |
| 45 |
Execution timed out |
1104 ms |
31064 KB |
Time limit exceeded |
| 46 |
Correct |
301 ms |
31068 KB |
Output is correct |
| 47 |
Execution timed out |
1069 ms |
31068 KB |
Time limit exceeded |
| 48 |
Incorrect |
489 ms |
31216 KB |
Output isn't correct |
| 49 |
Correct |
142 ms |
31064 KB |
Output is correct |
| 50 |
Incorrect |
492 ms |
31216 KB |
Output isn't correct |
| 51 |
Incorrect |
512 ms |
31316 KB |
Output isn't correct |
| 52 |
Incorrect |
530 ms |
31220 KB |
Output isn't correct |
| 53 |
Incorrect |
494 ms |
31216 KB |
Output isn't correct |
| 54 |
Execution timed out |
1066 ms |
31068 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1066 ms |
31068 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1004 ms |
31064 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1090 ms |
31440 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1072 ms |
31068 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1040 ms |
31068 KB |
Time limit exceeded |
| 60 |
Correct |
362 ms |
31216 KB |
Output is correct |
| 61 |
Correct |
485 ms |
31216 KB |
Output is correct |
| 62 |
Execution timed out |
1081 ms |
31068 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1052 ms |
31068 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1058 ms |
31128 KB |
Time limit exceeded |
| 65 |
Incorrect |
543 ms |
31216 KB |
Output isn't correct |
| 66 |
Incorrect |
171 ms |
31220 KB |
Output isn't correct |
| 67 |
Incorrect |
482 ms |
31220 KB |
Output isn't correct |
| 68 |
Incorrect |
598 ms |
31232 KB |
Output isn't correct |
| 69 |
Execution timed out |
1048 ms |
31068 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1057 ms |
20060 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1016 ms |
31068 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1078 ms |
31064 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1040 ms |
31068 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1018 ms |
31064 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1047 ms |
31068 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1073 ms |
31068 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1054 ms |
31068 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1067 ms |
31068 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1020 ms |
31068 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1061 ms |
31068 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1042 ms |
31064 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1028 ms |
31064 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1034 ms |
31068 KB |
Time limit exceeded |
| 84 |
Incorrect |
244 ms |
31224 KB |
Output isn't correct |
| 85 |
Execution timed out |
1049 ms |
31188 KB |
Time limit exceeded |
| 86 |
Correct |
389 ms |
31220 KB |
Output is correct |
| 87 |
Execution timed out |
1029 ms |
31064 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1076 ms |
31068 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1044 ms |
31068 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1012 ms |
20056 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1053 ms |
31064 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1042 ms |
31064 KB |
Time limit exceeded |
| 93 |
Incorrect |
679 ms |
31320 KB |
Output isn't correct |
| 94 |
Execution timed out |
1064 ms |
31068 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1050 ms |
31068 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1062 ms |
31068 KB |
Time limit exceeded |
| 97 |
Incorrect |
434 ms |
31064 KB |
Output isn't correct |
| 98 |
Execution timed out |
1041 ms |
30984 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1066 ms |
31068 KB |
Time limit exceeded |
| 100 |
Incorrect |
782 ms |
31312 KB |
Output isn't correct |
