You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
687 B
29 lines
687 B
#include <bits/stdc++.h>
|
|
using namespace std;
|
|
const int N = 310;
|
|
|
|
int a[N][N], s[N][N], dp[N];
|
|
int n, ans;
|
|
|
|
int main() {
|
|
cin >> n;
|
|
for (int i = 1; i <= n; i++)
|
|
for (int j = 1; j <= n; j++)
|
|
cin >> a[i][j];
|
|
|
|
for (int j = 1; j <= n; j++)
|
|
for (int i = 1; i <= n; i++)
|
|
a[i][j] += a[i - 1][j];
|
|
|
|
for (int i = 1; i <= n; i++) {
|
|
for (int k = 1; k <= i; k++) {
|
|
for (int j = 1; j <= n; j++) {
|
|
int gap = a[i][j] - a[i - k][j];
|
|
dp[j] = max(dp[j - 1] + gap, gap);
|
|
ans = max(dp[j], ans);
|
|
}
|
|
}
|
|
}
|
|
cout << ans;
|
|
return 0;
|
|
} |