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#include<fstream>
#include<iostream>
using namespace std;
#define MAX 100
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int m[100][100];
int n;
int citire()
{
f>>n;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
f>>m[i][j];
return 0;
}
int rf()
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
for(int k=1;k<=n;k++)
{
if(m[i][j]>m[i][k]+m[k][j])
m[i][j] = m[i][k] + m[k][j];
}
}
}
return 0;
}
int main()
{
citire();
rf();
return 0;
}