| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 942744 |
2024-03-11T03:49:28 Z |
atom |
Bomb (IZhO17_bomb) |
C++17 |
|
1000 ms |
29032 KB |
#include "bits/stdc++.h"
// @JASPER'S BOILERPLATE
using namespace std;
using ll = long long;
#ifdef JASPER
#include "debug.h"
#else
#define debug(...) 166
#endif
signed main() {
cin.tie(0) -> sync_with_stdio(0);
int n, m;
cin >> n >> m;
vector <vector <int>> a(n + 5, vector <int> (m + 5, 0));
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
char x; cin >> x;
a[i][j] = x - '0';
}
}
// for (int i = 1; i <= n; ++i)
// for (int j = 1; j <= m; ++j)
// cout << a[i][j] << " \n"[j == m];
//sub1: shortest consecutive 1ss
if (n == 1 || m == 1) {
if (n == 1) {
int ans = 1e9;
for (int i = 1; i <= m; ++i) {
if (a[1][i] == 0) continue;
int cur = 0;
while (i <= m && a[1][i]) {
++cur;
++i;
}
ans = min(ans, cur);
}
cout << ans << "\n";
return 0;
}
if (m == 1) {
int ans = 1e9;
for (int i = 1; i <= n; ++i) {
if (a[i][1] == 0) continue;
int cur = 0;
while (i <= n && a[i][1]) {
++cur;
++i;
}
ans = min(ans, cur);
}
cout << ans << "\n";
return 0;
}
}
// sub3
if (n <= 450 && m <= 450) {
vector <vector <int>> prf(n + 5, vector <int> (m + 5, 0));
int earth = 0;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
earth += (a[i][j] == 0);
prf[i][j] = prf[i][j - 1] + prf[i - 1][j] - prf[i - 1][j - 1] + a[i][j];
}
}
int ans = 0;
for (int x = 1; x <= n; ++x) {
for (int y = 1; y <= m; ++y) {
if (x * y <= ans) continue;
// prf(l)++, prf(r + 1)--;
vector <vector <int>> dmg(n + 2, vector <int> (m + 2, 0));
for (int i = 1; i + x - 1 <= n; ++i) {
for (int j = 1; j + y - 1 <= m; ++j) {
int I = i + x - 1, J = j + y - 1;
if (prf[I][J] + prf[i - 1][j - 1] - prf[I][j - 1] - prf[i - 1][J] == x * y) {
dmg[i][j] += 1;
dmg[I + 1][j] -= 1;
dmg[i][J + 1] -= 1;
dmg[I + 1][J + 1] += 1;
}
}
}
// if (x == 3 && y == 1) {
// cout << "\n";
// for (int i = 1; i <= n; ++i)
// for (int j = 1; j <= m; ++j)
// cout << dmg[i][j] << " \n"[j == m];
// }
for (int i = 1; i <= n; ++i)
for (int j = 1; j <= m; ++j)
dmg[i][j] += dmg[i - 1][j] + dmg[i][j - 1] - dmg[i - 1][j - 1];
// if (x == 3 && y == 1) {
// cout << "\n";
// for (int i = 1; i <= n; ++i)
// for (int j = 1; j <= m; ++j)
// cout << dmg[i][j] << " \n"[j == m];
// }
bool valid = 1;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
if (a[i][j] && !dmg[i][j])
valid = 0;
}
}
if (valid) ans = max(ans, x * y);
}
}
cout << ans << "\n";
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 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 |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
436 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
99 ms |
348 KB |
Output is correct |
| 18 |
Correct |
81 ms |
504 KB |
Output is correct |
| 19 |
Correct |
209 ms |
540 KB |
Output is correct |
| 20 |
Correct |
238 ms |
344 KB |
Output is correct |
| 21 |
Correct |
86 ms |
504 KB |
Output is correct |
| 22 |
Correct |
196 ms |
532 KB |
Output is correct |
| 23 |
Correct |
365 ms |
568 KB |
Output is correct |
| 24 |
Correct |
145 ms |
344 KB |
Output is correct |
| 25 |
Correct |
385 ms |
576 KB |
Output is correct |
| 26 |
Correct |
387 ms |
568 KB |
Output is correct |
| 27 |
Execution timed out |
1051 ms |
1436 KB |
Time limit exceeded |
| 28 |
Execution timed out |
1054 ms |
1820 KB |
Time limit exceeded |
| 29 |
Execution timed out |
1048 ms |
1988 KB |
Time limit exceeded |
| 30 |
Execution timed out |
1061 ms |
3112 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1018 ms |
2704 KB |
Time limit exceeded |
| 32 |
Execution timed out |
1069 ms |
2616 KB |
Time limit exceeded |
| 33 |
Execution timed out |
1018 ms |
3224 KB |
Time limit exceeded |
| 34 |
Execution timed out |
1069 ms |
1492 KB |
Time limit exceeded |
| 35 |
Execution timed out |
1006 ms |
3412 KB |
Time limit exceeded |
| 36 |
Execution timed out |
1047 ms |
3048 KB |
Time limit exceeded |
| 37 |
Correct |
1 ms |
344 KB |
Output is correct |
| 38 |
Incorrect |
64 ms |
24920 KB |
Output isn't correct |
| 39 |
Correct |
1 ms |
344 KB |
Output is correct |
| 40 |
Incorrect |
8 ms |
3420 KB |
Output isn't correct |
| 41 |
Correct |
1 ms |
348 KB |
Output is correct |
| 42 |
Correct |
333 ms |
596 KB |
Output is correct |
| 43 |
Incorrect |
77 ms |
25084 KB |
Output isn't correct |
| 44 |
Execution timed out |
1030 ms |
3152 KB |
Time limit exceeded |
| 45 |
Incorrect |
71 ms |
25092 KB |
Output isn't correct |
| 46 |
Incorrect |
75 ms |
25088 KB |
Output isn't correct |
| 47 |
Incorrect |
74 ms |
28896 KB |
Output isn't correct |
| 48 |
Incorrect |
79 ms |
28912 KB |
Output isn't correct |
| 49 |
Incorrect |
73 ms |
28684 KB |
Output isn't correct |
| 50 |
Incorrect |
70 ms |
28688 KB |
Output isn't correct |
| 51 |
Incorrect |
73 ms |
28904 KB |
Output isn't correct |
| 52 |
Incorrect |
67 ms |
28852 KB |
Output isn't correct |
| 53 |
Incorrect |
71 ms |
28672 KB |
Output isn't correct |
| 54 |
Incorrect |
67 ms |
28844 KB |
Output isn't correct |
| 55 |
Incorrect |
72 ms |
28672 KB |
Output isn't correct |
| 56 |
Incorrect |
86 ms |
28812 KB |
Output isn't correct |
| 57 |
Incorrect |
67 ms |
28704 KB |
Output isn't correct |
| 58 |
Incorrect |
66 ms |
28752 KB |
Output isn't correct |
| 59 |
Incorrect |
66 ms |
28756 KB |
Output isn't correct |
| 60 |
Incorrect |
84 ms |
28676 KB |
Output isn't correct |
| 61 |
Incorrect |
67 ms |
28752 KB |
Output isn't correct |
| 62 |
Incorrect |
85 ms |
28744 KB |
Output isn't correct |
| 63 |
Incorrect |
66 ms |
28832 KB |
Output isn't correct |
| 64 |
Incorrect |
65 ms |
28708 KB |
Output isn't correct |
| 65 |
Incorrect |
66 ms |
28736 KB |
Output isn't correct |
| 66 |
Incorrect |
70 ms |
28888 KB |
Output isn't correct |
| 67 |
Incorrect |
67 ms |
28752 KB |
Output isn't correct |
| 68 |
Incorrect |
72 ms |
28880 KB |
Output isn't correct |
| 69 |
Incorrect |
67 ms |
28756 KB |
Output isn't correct |
| 70 |
Incorrect |
44 ms |
19024 KB |
Output isn't correct |
| 71 |
Incorrect |
68 ms |
28752 KB |
Output isn't correct |
| 72 |
Incorrect |
66 ms |
28756 KB |
Output isn't correct |
| 73 |
Incorrect |
69 ms |
29032 KB |
Output isn't correct |
| 74 |
Incorrect |
66 ms |
28752 KB |
Output isn't correct |
| 75 |
Incorrect |
66 ms |
28712 KB |
Output isn't correct |
| 76 |
Incorrect |
66 ms |
28844 KB |
Output isn't correct |
| 77 |
Incorrect |
68 ms |
28756 KB |
Output isn't correct |
| 78 |
Incorrect |
67 ms |
28756 KB |
Output isn't correct |
| 79 |
Incorrect |
66 ms |
28680 KB |
Output isn't correct |
| 80 |
Incorrect |
65 ms |
28756 KB |
Output isn't correct |
| 81 |
Incorrect |
65 ms |
28744 KB |
Output isn't correct |
| 82 |
Incorrect |
67 ms |
28756 KB |
Output isn't correct |
| 83 |
Incorrect |
82 ms |
28856 KB |
Output isn't correct |
| 84 |
Incorrect |
69 ms |
28756 KB |
Output isn't correct |
| 85 |
Incorrect |
66 ms |
28692 KB |
Output isn't correct |
| 86 |
Incorrect |
65 ms |
28792 KB |
Output isn't correct |
| 87 |
Incorrect |
71 ms |
28684 KB |
Output isn't correct |
| 88 |
Incorrect |
66 ms |
28768 KB |
Output isn't correct |
| 89 |
Incorrect |
67 ms |
28756 KB |
Output isn't correct |
| 90 |
Incorrect |
45 ms |
19176 KB |
Output isn't correct |
| 91 |
Incorrect |
69 ms |
28848 KB |
Output isn't correct |
| 92 |
Incorrect |
66 ms |
28756 KB |
Output isn't correct |
| 93 |
Incorrect |
80 ms |
28752 KB |
Output isn't correct |
| 94 |
Incorrect |
69 ms |
28892 KB |
Output isn't correct |
| 95 |
Incorrect |
75 ms |
28756 KB |
Output isn't correct |
| 96 |
Incorrect |
68 ms |
28756 KB |
Output isn't correct |
| 97 |
Incorrect |
66 ms |
28924 KB |
Output isn't correct |
| 98 |
Incorrect |
68 ms |
28928 KB |
Output isn't correct |
| 99 |
Incorrect |
79 ms |
28752 KB |
Output isn't correct |
| 100 |
Incorrect |
67 ms |
28508 KB |
Output isn't correct |
