#include <bits/stdc++.h>
using namespace std;
const int N = 55;
int a[N][N];
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= n; j++)
            cin >> a[i][j];
    int ans = 0;
    for (int i = 1; i <= n; i++)
    {
        int minx = 0x3f;
        for (int j = 1; j <= n; j++)
        {
            minx = min(minx, a[i][j]);
        }
        ans = max(ans, minx);
    }
    cout << ans << endl;
    return 0;
}