Cod sursa(job #1493136)

Utilizator depevladVlad Dumitru-Popescu depevlad Data 28 septembrie 2015 19:16:19
Problema Floyd-Warshall/Roy-Floyd Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.42 kb
///* In comments - Path rebuilding *///

#include <fstream>
#include <algorithm>
#include <vector>

using namespace std;

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

const int MAX_N = 100;
const int INF = 0x3fffffff;

int A[1 + MAX_N][1 + MAX_N];
//int lastK[1 + MAX_N][1 + MAX_N];

/*void shortestPath(int i, int j) {
    if (lastK[i][j] == 0) {
        out << i << " ";
    }
    else {
        shortestPath(i, lastK[i][j]);
        shortestPath(lastK[i][j], j);
    }
}*/

int main() {
    int n, i, j, k;
    int I, J;

    in >> n;
    for(i = 1; i <= n; i++) {
        for(j = 1; j <= n; j++) {
            in >> A[i][j];
            if (A[i][j] == 0)
                A[i][j] = INF;
        }
    }

    //in >> I >> J;

    for (k = 1; k <= n; k++) {
        for (i = 1; i <= n; i++) {
            for (j = 1; j <= n; j++) {
                if (i != k && j != k && i != j) {
                    if (A[i][j] > A[i][k] + A[k][j]) {
                        A[i][j] = A[i][k] + A[k][j];
                        //lastK[i][j] = k;
                    }
                }
            }
        }
    }

    for(i = 1; i <= n; i++) {
        for(j = 1; j <= n; j++) {
            if (A[i][j] == INF)
                A[i][j] = 0;
            out << A[i][j] << " ";
        }
        out << "\n";
    }

    //shortestPath(I, J);
    //out << J << "\n";

    return 0;
}