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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int a[101][101];
int main()
{
int n,i,j,k;
fin>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
fin>>a[i][j];
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
for(k=1;k<=n;k++)
if(i!=j&&(a[i][k]&&a[k][j]&&a[i][j]>a[i][k]+a[k][j]||!a[i][j]))
a[i][j]=a[i][k]+a[k][j];
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
fout<<a[i][j];
fin.close();
fout.close();
return 0;
}