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Cod sursa(job #382223)
#include<iostream>
#include<fstream>
using namespace std;
int a[100][100],i,j,n,k;
void citire()
{ ifstream f("royfloyd.in");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
f.close();
}
void warshall()
{ 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]&&i!=j)
a[i][j]=a[i][k]+a[k][j];
}
void afisare()
{ ofstream g("royfloyd.out");
for(i=1;i<=n;i++)
{for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<endl;
}
g.close();
}
int main()
{ citire();
warshall();
afisare();
return 0;
}