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Cod sursa(job #854295)
#include<fstream>
using namespace std;
int gr[101][101];
int minim(int a,int b)
{
if(a<=b)
return a;
return b;
}
int main()
{
int n,i,j,k;
int inf=10000000;
ifstream f("royfloyd.in");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{
f>>gr[i][j];
if((gr[i][j]==0)&&(i!=j))
gr[i][j]=inf;
}
f.close();
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
gr[i][j]=minim(gr[i][j],gr[i][k]+gr[k][j]);
ofstream g("royfloyd.out");
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
{
if(gr[i][j]==inf)
g<<"0 ";
else
g<<gr[i][j]<<" ";
}
g<<'\n';
}
g.close();
return 0;
}