| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 524041 |
2022-02-08T14:43:22 Z |
boykut |
Bomb (IZhO17_bomb) |
C++14 |
|
1000 ms |
52764 KB |
#include <bits/stdc++.h>
using namespace std;
const int N = 2500;
int arr[N][N];
int pref[N][N];
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int n, m;
cin >> n >> m;
//if (n * n * n * m * m * m > 1e8) return 0;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
char x; cin >> x;
arr[i][j] = x - '0';
pref[i][j] = x - '0';
pref[i][j] += (i ? pref[i - 1][j] : 0);
pref[i][j] += (j ? pref[i][j - 1] : 0);
pref[i][j] -= (i && j ? pref[i - 1][j - 1] : 0);
}
}
auto get = [&](int a, int b, int c, int d) ->int {
int s = pref[c][d];
s -= (a ? pref[a - 1][d] : 0);
s -= (b ? pref[c][b - 1] : 0);
s += (a && b ? pref[a - 1][b - 1] : 0);
return s;
};
// brute force
int Q = 2;
auto check = [&](int a, int b) ->int {
for (int i = 0; i + a - 1 < n; i++) {
for (int j = 0; j + b - 1 < m; j++) {
int g = get(i, j, i + a - 1, j + b - 1);
if (g == a * b) {
for (int i2 = i; i2 <= i + a - 1; i2++) {
for (int j2 = j; j2 <= j + b - 1; j2++)
arr[i2][j2] = Q;
}
}
}
}
int ok = 1;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (arr[i][j] != 0 && arr[i][j] != Q) ok = 0;
}
}
Q++;
return ok;
};
int ans = 0;
for (int a = 1; a <= n; a++) {
int l = 1, r = m;
while (l < r) {
int b = (l + r + 1) / 2;
if (check(a, b))
l = b;
else
r = b - 1;
}
if (check(a, l))
ans = max(ans, a * l);
// for (int b = l; b <= r; b++) {
// if (check(a, b)) {
// ans = max(ans, a * b);
// }
// }
}
cout << ans << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
460 KB |
Output is correct |
| 3 |
Execution timed out |
1085 ms |
20300 KB |
Time limit exceeded |
| 4 |
Correct |
835 ms |
20384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
0 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
460 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
460 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
2 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
460 KB |
Output is correct |
| 17 |
Correct |
7 ms |
888 KB |
Output is correct |
| 18 |
Correct |
5 ms |
844 KB |
Output is correct |
| 19 |
Correct |
11 ms |
1148 KB |
Output is correct |
| 20 |
Correct |
17 ms |
1100 KB |
Output is correct |
| 21 |
Correct |
4 ms |
716 KB |
Output is correct |
| 22 |
Correct |
7 ms |
996 KB |
Output is correct |
| 23 |
Correct |
22 ms |
1192 KB |
Output is correct |
| 24 |
Correct |
9 ms |
972 KB |
Output is correct |
| 25 |
Correct |
32 ms |
1204 KB |
Output is correct |
| 26 |
Correct |
366 ms |
1208 KB |
Output is correct |
| 27 |
Execution timed out |
1079 ms |
3276 KB |
Time limit exceeded |
| 28 |
Correct |
448 ms |
3612 KB |
Output is correct |
| 29 |
Execution timed out |
1076 ms |
4476 KB |
Time limit exceeded |
| 30 |
Execution timed out |
1027 ms |
5308 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1064 ms |
4296 KB |
Time limit exceeded |
| 32 |
Execution timed out |
1047 ms |
4940 KB |
Time limit exceeded |
| 33 |
Execution timed out |
1074 ms |
5708 KB |
Time limit exceeded |
| 34 |
Correct |
447 ms |
3872 KB |
Output is correct |
| 35 |
Execution timed out |
1059 ms |
5708 KB |
Time limit exceeded |
| 36 |
Execution timed out |
1072 ms |
5624 KB |
Time limit exceeded |
| 37 |
Correct |
1 ms |
452 KB |
Output is correct |
| 38 |
Execution timed out |
1030 ms |
52592 KB |
Time limit exceeded |
| 39 |
Correct |
1 ms |
460 KB |
Output is correct |
| 40 |
Execution timed out |
1086 ms |
14028 KB |
Time limit exceeded |
| 41 |
Correct |
1 ms |
452 KB |
Output is correct |
| 42 |
Correct |
198 ms |
1100 KB |
Output is correct |
| 43 |
Execution timed out |
1074 ms |
52592 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1091 ms |
5712 KB |
Time limit exceeded |
| 45 |
Execution timed out |
1042 ms |
52420 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1033 ms |
51896 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1058 ms |
51908 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1056 ms |
51832 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1022 ms |
51808 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1088 ms |
51984 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1050 ms |
51796 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1033 ms |
51908 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1046 ms |
51908 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1045 ms |
51720 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1049 ms |
51592 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1065 ms |
51316 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1054 ms |
51396 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1092 ms |
51228 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1054 ms |
51008 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1041 ms |
50888 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1034 ms |
51060 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1080 ms |
50824 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1059 ms |
50896 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1016 ms |
50884 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1088 ms |
50876 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1045 ms |
50532 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1077 ms |
50500 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1052 ms |
50700 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1046 ms |
51044 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1088 ms |
40184 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1060 ms |
51380 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1074 ms |
51396 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1035 ms |
51392 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1067 ms |
51400 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1107 ms |
51360 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1084 ms |
51304 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1056 ms |
51444 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1098 ms |
51404 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1008 ms |
51396 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1022 ms |
51452 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1010 ms |
51316 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1022 ms |
51400 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1075 ms |
51392 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1049 ms |
51388 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1014 ms |
51308 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1041 ms |
50372 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1018 ms |
50300 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1093 ms |
50452 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1029 ms |
50740 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1047 ms |
40816 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1063 ms |
51600 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1060 ms |
52200 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1014 ms |
52340 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1062 ms |
52552 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1058 ms |
52760 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1016 ms |
52764 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1090 ms |
52368 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1026 ms |
52000 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1008 ms |
52116 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1049 ms |
52100 KB |
Time limit exceeded |
