#include <iostream>
using namespace std;
 
int main() {
    int n;
    cin >> n;
 
    int a[100][100];
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cin >> a[i][j];
        }
    }
    int b = 0;
    for (int i = 0; i < n; i++) {
        int c = 0;
        for (int j = 0; j < n; j++) {
            c += a[i][j];
        }
        if (c > b) {
            b = c;
        }
    }
    cout << b << endl;
 
    return 0;
}

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