Cod sursa(job #3198947)

Utilizator GuessImHereNowAndy Coste GuessImHereNow Data 31 ianuarie 2024 10:14:29
Problema Floyd-Warshall/Roy-Floyd Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.17 kb
#include <bits/stdc++.h>

using namespace std;

ifstream f("royfloyd.in");
ofstream o("royfloyd.out");

int n,cost[1005][1005];

void roy_floyd()
{
    for(int k = 1 ; k <= n ; k++)
    {
        for(int i = 1 ; i <= n ; i++)
        {
            for(int j = 1 ; j <= n ; j++)
            {
                if(i != j && cost[i][k] != 0 && cost[k][j] != 0 && i != k && j !=k)
                {
                    if(cost[i][k] + cost[k][j] < cost[i][j])
                    {
                        cost[i][j] = cost[i][k] + cost[k][j];
                    }
                }

            }
        }
    }
}

int main()
{
f >> n;
        for(int i = 1 ; i <= n ; i++)
        {
            for(int j = 1 ; j <= n ; j++)
            {
                f >> cost[i][j];
                if(cost[i][j] == 0 && i != j)
                {
                    cost[i][j] = 10005;
                }
            }
        }

roy_floyd();
for(int i = 1 ; i <= n ; i++)
{
    for(int j = 1 ; j <= n ; j++)
    {
        if(i == j)
        {
            cost[i][j] = 0;
        }
        o << cost[i][j] << " ";
    }
    o << '\n';
}

    return 0;
}