Cod sursa(job #1218702)

Utilizator gabrielinelusGabriel-Robert Inelus gabrielinelus Data 12 august 2014 12:46:08
Problema Floyd-Warshall/Roy-Floyd Scor 50
Compilator cpp Status done
Runda Arhiva educationala Marime 1 kb
#include <cstdio>

#define Nmax 105
#define INF 0x3f3f3f3f

using namespace std;

int adj[Nmax][Nmax],N;
int DP[Nmax][Nmax];

void read( void )
{
    scanf("%d", &N);
    for(int i = 1; i <= N; ++i)
        for(int j = 1; j<= N; ++j)
        {
            scanf("%d", &adj[i][j]);
            if(i == j)
                DP[i][j] = INF;
            else
                DP[i][j] = adj[i][j];
        }
}

void solve()
{
    for(int k = 1; k <= N; ++k) /// nodul cu care optimizez
        for(int i = 1; i <= N; ++i)
        if( i != k ) for(int j = 1; j <= N; ++j) if(i != j && k != j)
            if(DP[i][j] > DP[i][k] + DP[k][j])
                DP[i][j] = DP[i][k] + DP[k][j];
    for(int i = 1; i <= N; ++i){
        for(int j = 1; j <= N; ++j)
            printf("%d ",DP[i][j] == INF? 0 : DP[i][j]);
        printf("\n");
    }
}

int main()
{
    freopen("royfloyd.in","r",stdin);
    freopen("royfloyd.out","w",stdout);

    read();
    solve();

    return 0;
}