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Cod sursa(job #243835)
#include<fstream.h>
int a[120][120],n,i,k,j;
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>>a[i][j];
if(a[i][j]==0 && i!=j)
a[i][j]=-1;
}
}
void afisare()
{
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
if(a[i][j]==-1)
g<<0<<' ';
else
g<<a[i][j]<<' ';
g<<'\n';
}
}
int main()
{
citire();
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][j] && a[i][k]>0 && a[k][j]>0)
a[i][j]=a[i][k]+a[k][j];
}
afisare();
g.close();
return 0;
}