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Cod sursa(job #397155)
#include<fstream.h>
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n, i, j,a[101][101];
void creare(){
int i, j;
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
}
void roy(){
int i, j, k;
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if((a[i][j]==0&&i!=j&&j!=k&i!=k||a[i][j]>a[i][k]+a[k][j])&&a[i][k]!=0&&a[k][j]!=0)
a[i][j]=a[i][k]+a[k][j];
}
int main(){
creare();
roy();
for(i=1;i<=n;i++){
for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<'\n';
}
f.close();
g.close();
return 0;
}