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Cod sursa(job #593475)
#include<fstream.h>
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int a[101][101],i,j,n;
void royfloyd()
{
int k;
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if((a[i][k]+a[k][j]<a[i][k] || a[i][j]==0)&& i!=j && a[i][k]!=0 && a[k][j]!=0)
a[i][j]=a[i][k]+a[k][j];
}
int main()
{
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
royfloyd();
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<'\n';
}
return 0;
}