Cod sursa(job #2478550)

Utilizator richard26Francu Richard richard26 Data 22 octombrie 2019 13:09:51
Problema Dusman Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.25 kb
#include <bits/stdc++.h>

using namespace std;

vector <int> en[1001];
int uz[1001],curr;
int arr[1001];

ifstream f("dusman.in");
ofstream g("dusman.out");

bool check_en(int x, int y) {

    for (int it : en[x]) {
        if (it == y) {
            return false;
        }
    }

    return true;
}

void gen_perm(int nr, int n, int k) {

    //cout << nr << endl;

    if (nr == n + 1) {
        
    
        //cout << curr << " ";

        if (curr == k) {
            for ( int i = 1; i <= n; i++) {
                g << arr[i] << " ";
            }

        g << '\n';
        exit(EXIT_SUCCESS);
        }

        return;
    }

    for (int i = 1 ; i <= n; i++) {

        if ( uz[i] == 0 && check_en( arr[nr - 1], i) ) {
            uz[i] = 1;
            arr[nr] = i;
            nr++;
            if (nr == n + 1) curr ++;
            gen_perm(nr, n, k);
            nr--;
            uz[i] = 0;
        }
    }
}

int main()
{

    int n, m, k;
    f >> n >> k >> m;
    //cout << n << m << k;


    for (int i = 0; i < m; i++) {

        // cout << i << endl;
        int x, y;
        f >> x >> y;
        //cout << x << y;

        en[x].push_back(y);
        en[y].push_back(x);
    }

    arr[0] = 0;
    en[0].push_back(0);


    gen_perm(1, n, k);
    return 0;

}