Cod sursa(job #1279722)

Utilizator whoasdas dasdas who Data 30 noiembrie 2014 19:37:08
Problema Loto Scor 15
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.91 kb
#include <cstdio>
#include <cstdlib>

FILE *in = fopen("loto.in", "r");
FILE *out = fopen("loto.out", "w");

int cmp (const void *p1, const void *p2)
{
    int a = *(int*)p1, b = *(int*)p2;
    return a - b;
}


int p(int *v, int n, int *sol, int ii, int k, int s)
{
    if (s < 0)
        return 1;

    if (k == 6)
        return s == 0 ? 0 : -1;

    for (int i = ii; i < n; i++) {
        sol[k] = v[i];
        if (p(v, n, sol, i, k+1, s-v[i]) == 0)
            return 0;
    }

    return -1;
}


int main()
{

    int n, s;
    fscanf(in, "%d %d", &n, &s);
    int v[n], sol[n];
    for (int i = 0; i < n; i++)
        fscanf(in, "%d", &v[i]);

    qsort(v, n, sizeof(int), cmp);

    if (p(v, n, sol, 0, 0, s) == 0) {
        for (int i = 0; i < 6; i++) {
            fprintf(out, "%d ", sol[i]);
        }
    } else {
        fprintf(out, "-1");
    }

    return 0;
}