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#include <fstream>
#define inf 123456789
#include <iostream>
using namespace std;
int n,a[100][100];
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
void citire()
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(i!=j)
a[i][j]=a[j][i]=inf;
}
}
int x,y,z;
fin>>n;
while(fin>>x>>y>>z)
{
a[x][y]=a[y][x]=z;
}
}
void rez()
{
for(int k=1;k<=n;k++)
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(a[i][k]+a[k][j]<a[i][j] && i!=j)
a[i][j]=a[i][k]+a[k][j];
}
}
}
}
void afis()
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(a[i][j]==inf)
a[i][j]=0;
fout<<a[i][j]<<" ";
}
fout<<endl;
}
}
int main()
{
citire();
rez();
afis();
}