| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 223999 |
2020-04-17T01:55:26 Z |
super_j6 |
Bomb (IZhO17_bomb) |
C++14 |
|
370 ms |
74012 KB |
#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second
const int maxn = 2500;
int n, m;
int a[maxn][maxn], u[maxn][maxn], d[maxn][maxn];
int dp[maxn];
int main(){
ios::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> m;
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++){
char c;
cin >> c;
a[i][j] = c - '0';
}
for(int j = 0; j < m; j++){
dp[j] = n;
u[n - 1][j] = n - 1;
for(int i = 1; i < n; i++){
d[i][j] = !a[i][j] || !a[i - 1][j] ? i : d[i - 1][j];
u[n - i - 1][j] = !a[n - i - 1][j] || !a[n - i][j] ? n - i - 1 : u[n - i][j];
}
}
for(int i = 0; i < n; i++)
for(int j = 0, l = 0, ul = n - 1, dl = 0, r = m - 1, ur = n - 1, dr = 0; j < m; j++){
if(a[i][j]){
dp[0] = min(dp[0], u[i][j] - d[i][j] + 1);
ul = min(ul, u[i][j]), dl = max(dl, d[i][j]);
dp[j - l] = min(dp[j - l], ul - dl + 1);
}else{
if(j > l) dp[j - l] = 0;
l = j + 1;
ul = n - 1, dl = 0;
}
if(a[i][m - j - 1]){
ur = min(ur, u[i][m - j - 1]), dr = max(dr, d[i][m - j - 1]);
dp[r + j + 1 - m] = min(dp[r + j + 1 - m], ur - dr + 1);
}else{
if(m - j - 1 < r) dp[r + j + 1 - m] = 0;
r = m - j - 2;
ur = n - 1, dr = 0;
}
}
int ret = 0;
for(int i = 0; i < m; i++){
if(i) dp[i] = min(dp[i], dp[i - 1]);
ret = max(ret, (i + 1) * dp[i]);
}
cout << ret << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
640 KB |
Output is correct |
| 3 |
Correct |
16 ms |
30464 KB |
Output is correct |
| 4 |
Correct |
16 ms |
30464 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
4 ms |
384 KB |
Output is correct |
| 7 |
Correct |
4 ms |
384 KB |
Output is correct |
| 8 |
Correct |
4 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
640 KB |
Output is correct |
| 10 |
Correct |
5 ms |
512 KB |
Output is correct |
| 11 |
Correct |
4 ms |
640 KB |
Output is correct |
| 12 |
Correct |
4 ms |
512 KB |
Output is correct |
| 13 |
Correct |
4 ms |
512 KB |
Output is correct |
| 14 |
Correct |
5 ms |
512 KB |
Output is correct |
| 15 |
Correct |
4 ms |
512 KB |
Output is correct |
| 16 |
Correct |
5 ms |
640 KB |
Output is correct |
| 17 |
Correct |
5 ms |
1152 KB |
Output is correct |
| 18 |
Correct |
5 ms |
1280 KB |
Output is correct |
| 19 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 20 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 21 |
Correct |
5 ms |
1024 KB |
Output is correct |
| 22 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 23 |
Correct |
5 ms |
1664 KB |
Output is correct |
| 24 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 25 |
Correct |
5 ms |
1664 KB |
Output is correct |
| 26 |
Correct |
5 ms |
1664 KB |
Output is correct |
| 27 |
Correct |
8 ms |
4864 KB |
Output is correct |
| 28 |
Correct |
9 ms |
5120 KB |
Output is correct |
| 29 |
Correct |
10 ms |
6528 KB |
Output is correct |
| 30 |
Correct |
12 ms |
7680 KB |
Output is correct |
| 31 |
Correct |
10 ms |
6144 KB |
Output is correct |
| 32 |
Correct |
11 ms |
7016 KB |
Output is correct |
| 33 |
Correct |
13 ms |
8192 KB |
Output is correct |
| 34 |
Correct |
9 ms |
5632 KB |
Output is correct |
| 35 |
Correct |
15 ms |
8064 KB |
Output is correct |
| 36 |
Correct |
13 ms |
8064 KB |
Output is correct |
| 37 |
Correct |
4 ms |
640 KB |
Output is correct |
| 38 |
Correct |
351 ms |
73720 KB |
Output is correct |
| 39 |
Correct |
5 ms |
640 KB |
Output is correct |
| 40 |
Correct |
46 ms |
19960 KB |
Output is correct |
| 41 |
Correct |
5 ms |
640 KB |
Output is correct |
| 42 |
Correct |
5 ms |
1664 KB |
Output is correct |
| 43 |
Correct |
355 ms |
73848 KB |
Output is correct |
| 44 |
Correct |
13 ms |
8192 KB |
Output is correct |
| 45 |
Correct |
344 ms |
73824 KB |
Output is correct |
| 46 |
Correct |
345 ms |
73720 KB |
Output is correct |
| 47 |
Correct |
338 ms |
73720 KB |
Output is correct |
| 48 |
Correct |
349 ms |
73824 KB |
Output is correct |
| 49 |
Correct |
361 ms |
73720 KB |
Output is correct |
| 50 |
Correct |
344 ms |
73720 KB |
Output is correct |
| 51 |
Correct |
349 ms |
73720 KB |
Output is correct |
| 52 |
Correct |
349 ms |
73720 KB |
Output is correct |
| 53 |
Correct |
347 ms |
73828 KB |
Output is correct |
| 54 |
Correct |
331 ms |
73776 KB |
Output is correct |
| 55 |
Correct |
331 ms |
73720 KB |
Output is correct |
| 56 |
Correct |
354 ms |
73720 KB |
Output is correct |
| 57 |
Correct |
330 ms |
73848 KB |
Output is correct |
| 58 |
Correct |
335 ms |
73720 KB |
Output is correct |
| 59 |
Correct |
347 ms |
73848 KB |
Output is correct |
| 60 |
Correct |
330 ms |
73720 KB |
Output is correct |
| 61 |
Correct |
348 ms |
73720 KB |
Output is correct |
| 62 |
Correct |
344 ms |
73848 KB |
Output is correct |
| 63 |
Correct |
362 ms |
73808 KB |
Output is correct |
| 64 |
Correct |
353 ms |
73744 KB |
Output is correct |
| 65 |
Correct |
354 ms |
73784 KB |
Output is correct |
| 66 |
Correct |
350 ms |
73828 KB |
Output is correct |
| 67 |
Correct |
365 ms |
73720 KB |
Output is correct |
| 68 |
Correct |
358 ms |
73976 KB |
Output is correct |
| 69 |
Correct |
342 ms |
73720 KB |
Output is correct |
| 70 |
Correct |
222 ms |
59132 KB |
Output is correct |
| 71 |
Correct |
346 ms |
73820 KB |
Output is correct |
| 72 |
Correct |
335 ms |
73848 KB |
Output is correct |
| 73 |
Correct |
341 ms |
73720 KB |
Output is correct |
| 74 |
Correct |
338 ms |
73720 KB |
Output is correct |
| 75 |
Correct |
342 ms |
74012 KB |
Output is correct |
| 76 |
Correct |
335 ms |
73720 KB |
Output is correct |
| 77 |
Correct |
342 ms |
73776 KB |
Output is correct |
| 78 |
Correct |
336 ms |
73720 KB |
Output is correct |
| 79 |
Correct |
331 ms |
73848 KB |
Output is correct |
| 80 |
Correct |
331 ms |
73720 KB |
Output is correct |
| 81 |
Correct |
332 ms |
73752 KB |
Output is correct |
| 82 |
Correct |
337 ms |
73696 KB |
Output is correct |
| 83 |
Correct |
348 ms |
73848 KB |
Output is correct |
| 84 |
Correct |
332 ms |
73788 KB |
Output is correct |
| 85 |
Correct |
338 ms |
73720 KB |
Output is correct |
| 86 |
Correct |
370 ms |
73720 KB |
Output is correct |
| 87 |
Correct |
343 ms |
73720 KB |
Output is correct |
| 88 |
Correct |
355 ms |
73720 KB |
Output is correct |
| 89 |
Correct |
347 ms |
73720 KB |
Output is correct |
| 90 |
Correct |
225 ms |
59128 KB |
Output is correct |
| 91 |
Correct |
354 ms |
73720 KB |
Output is correct |
| 92 |
Correct |
339 ms |
73720 KB |
Output is correct |
| 93 |
Correct |
358 ms |
73720 KB |
Output is correct |
| 94 |
Correct |
343 ms |
73720 KB |
Output is correct |
| 95 |
Correct |
340 ms |
73848 KB |
Output is correct |
| 96 |
Correct |
339 ms |
73720 KB |
Output is correct |
| 97 |
Correct |
364 ms |
73736 KB |
Output is correct |
| 98 |
Correct |
340 ms |
73700 KB |
Output is correct |
| 99 |
Correct |
346 ms |
73712 KB |
Output is correct |
| 100 |
Correct |
340 ms |
73720 KB |
Output is correct |
