Cod sursa(job #1822869)

Utilizator pofianFilipp pofian Data 5 decembrie 2016 18:25:04
Problema Floyd-Warshall/Roy-Floyd Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 0.8 kb
#include <fstream>
#define inf 99999
using namespace std;
ifstream fin ("royfloyd.in");
ofstream fout("royfloyd.out");
int n,a[1005][1005];

void cit()
{
    int i,j;
    for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
        fin>>a[i][j];
}

void roy_floyd()
{
    int i,j,k;
    for(k=1;k<=n;k++)
    for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
        if(i!=j)
            if(a[i][k]+a[k][j]<a[i][j])
                a[i][j]=a[i][k]+a[k][j];
}

int main()
{
    fin>>n;
    int i,j;
    for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
        a[i][j]=inf;
    cit();
    roy_floyd();
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
        {
            if(i==j)
                fout<<"0 ";
            else
                fout<<a[i][j]<<' ';
        }
        fout<<'\n';
    }
}