#include <bits/stdc++.h>
#define inf 2e9
#define ff first
#define ss second
#define all(v) v.begin() , v.end()
using namespace std;
typedef long long ll;
typedef pair <int, int> pii;
const int N = 1000 + 3;
int a[N][N], dp1[N][N], dp2[N][N], dp3[N][N], dp4[N][N];
int n, m;
int main()
{
#ifdef VBH
freopen("input.txt" , "r" , stdin);
#endif
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++)
dp1[i][j] = max(a[i][j], max(dp1[i - 1][j], dp1[i][j - 1]) - 1);
for (int i = n; i > 0; i--)
for (int j = m; j > 0; j--)
dp2[i][j] = max(a[i][j], max(dp2[i + 1][j], dp2[i][j + 1]) - 1);
for (int i = n; i > 0; i--)
for (int j = 1; j <= m; j++)
dp3[i][j] = max(a[i][j], max(dp3[i - 1][j], dp3[i][j + 1]) - 1);
for (int i = 1; i <= n; i++)
for (int j = 0; j > 0; j--)
dp4[i][j] = max(a[i][j], max(dp4[i + 1][j], dp4[i][j - 1]) - 1);
int mx = 0;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
mx = max(mx, max(max(dp1[i][j], dp2[i][j]), max(dp3[i][j], dp4[i][j])) - a[i][j]);
cout << mx - 1;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
380 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
476 KB |
Output is correct |
6 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
380 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
476 KB |
Output is correct |
6 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
380 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
476 KB |
Output is correct |
6 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |