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Cod sursa(job #519992)
#include<fstream>
using namespace std;
ifstream in("royfloyd.in");
ofstream out("royfloyd.out");
int n,a[110][110];
const int INF=1000000;
void read()
{
in>>n;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{
in>>a[i][j];
if(a[i][j]==0 && i!=j)
a[i][j]=INF;
}
}
void roy()
{
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
for(int k=1;k<=n;k++)
if(a[i][k]+a[k][j]<a[i][j])
a[i][j]=a[i][k]+a[k][j];
}
void afis()
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
out<<a[i][j]<<" ";
out<<"\n";
}
}
int main()
{
read();
roy();
afis();
return 0;
}