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Cod sursa(job #404343)
#include<iostream.h>
#include<fstream.h>
int n,a[100][100],i,j,x;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
void citire(){
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{f>>x;
a[i][j]=x;
}
}
void roy_floyd(){
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][k]!=0&& a[k][j]!=0)
if(i!=k&& j!=k && a[i][j]>a[i][k]+a[k][j])
a[i][j]=a[i][k]+a[k][j];
}
int main(){
citire();
roy_floyd();
for(i=1;i<=n;i++)
{for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<endl;}
return 0;
}