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Cod sursa(job #652195)
using namespace std;
#include<fstream>
int N;
int a[105][105];
ofstream fout("royfloyd.out");
void afisare()
{
int i,j;
for(i=1;i<=N;i++)
{
for(j=1;j<=N;j++)
{
fout<<a[i][j]<<" ";
}
fout<<"\n";
}
}
void royfloyd()
{
int k,i,j;
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]+a[k][j] || a[i][j]==0) && i!=j)
a[i][j]=a[i][k]+a[k][j];
}
}
}
}
void cit()
{
ifstream fin("royfloyd.in");
fin>>N;
int i,j;
for(i=1;i<=N;i++)
{
for(j=1;j<=N;j++)
{
fin>>a[i][j];
}
}
fin.close();
}
int main()
{
cit();
royfloyd();
afisare();
fout.close();
return 0;
}