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Cod sursa(job #857271)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n,x[101][101],i,j,k;
int main(){
f>>n;
for(i=1;i<=n;++i)
for(j=1;j<=n;++j){
f>>x[i][j];
//if(x[i][j]==0 )
//x[i][j]=1000000;
}
for(k=1;k<=n;++k)
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
if(i!=j && i!=k && j!=k && x[i][k] && x[k][j] && x[i][j]>x[i][k]+x[k][j]){
x[i][j]=x[i][k]+x[k][j];
}
for(i=1;i<=n;++i){
for(j=1;j<=n;++j){
//if(x[i][j]==1000000) x[i][j]=0;
g<<x[i][j]<<' ';
}
g<<'\n';
}
g.close();
return 0;
}