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Cod sursa(job #572441)
#include<fstream.h>
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n,a[105][105];
int main()
{ int k,i,j;
f>>n;
for(i=1;i<=n;++i)
for(j=1;j<=n;++j) f>>a[i][j];
for(k=1;k<=n;++k)
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
if( i!=j && a[i][k] && a[k][j] && (!a[i][j] || a[i][j]>a[i][k]+a[k][j]) ) a[i][j]=a[i][k]+a[k][j];
for(i=1;i<=n;++i)
{ for(j=1;j<=n;++j) g<<a[i][j]<<' ';
g<<'\n';
}
f.close(); g.close();
return 0;
}