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Cod sursa(job #545040)
#include<fstream.h>
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n,v[110][110];
void citire(){
f>>n;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
f>>v[i][j];
}
void royfloyd(){
int i,j,k;
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if((v[i][j]>v[i][k]+v[k][j]||!v[i][j])&&i!=j&&v[i][k]&&v[k][j])
v[i][j]=v[i][k]+v[k][j];
}
int main(){
citire();
royfloyd();
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++)
g<<v[i][j]<<' ';
g<<'\n';
}
g.close();
return 0;
}