Cod sursa(job #2565070)

Utilizator danhHarangus Dan danh Data 2 martie 2020 11:57:36
Problema Floyd-Warshall/Roy-Floyd Scor 50
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.16 kb
#include <iostream>
#include <fstream>
using namespace std;

ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");

int a[105][105];

const int inf = 0x3f3f3f3f;

int main()
{
    int n, i, j, k;
    fin>>n;

    for(i=1; i<=n; i++)
    {
        for(j=1; j<=n; j++)
        {
            a[i][j] = inf;
            if(i == j)
            {
                a[i][j] = 0;
            }
        }
    }
    for(i=1; i<=n; i++)
    {
        for(j=1; j<=n; j++)
        {
            fin>>a[i][j];
        }
    }

    for(k=1; k<=n; k++)
    {
        for(i=1; i<=n; i++)
        {
            for(j=1; j<=n; j++)
            {
                if(a[i][j] > a[i][k] + a[k][j])
                {
                    a[i][j] = a[i][k] + a[k][j];
                }
            }
        }
    }

    for(i=1; i<=n; i++)
    {
        for(j=1; j<=n; j++)
        {
            if(a[i][j] == inf)
            {
                fout<<0<<' ';
            }
            else
            {
                fout<<a[i][j]<<' ';
            }
        }
        fout<<'\n';
    }

    fin.close();
    fout.close();
    return 0;
}