#include <iostream>

using namespace std;


int a[150][150],n;

void citire()
{

    scanf("%d",&n);


    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            {
                scanf("%d",a[i]);
            }

}


int main()
{
    freopen("royfloyd.in","r",stdin);
    freopen("royfloyd.out","w",stdout);

    citire();

    for(int k=1;k<=n;k++)
        for(int i=1;i<=n;i++)
            for(int j=1;j<=n;j++)
                {
                    if(a[i][j]>a[i][k]+a[k][j])
                        {
                            a[i][j]=a[i][k]+a[k][j];
                        }
                }

    return 0;
}