Cod sursa(job #2519804)

Utilizator vlad082002Ciocoiu Vlad vlad082002 Data 8 ianuarie 2020 14:18:07
Problema Loto Scor 15
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.01 kb
#include <fstream>
using namespace std;

ifstream fin("loto.in");
ofstream fout("loto.out");

int v[128], n, s, sol[8];
bool found;

void citire() {
    fin >> n >> s;
    for(int i = 1; i <= n; i++)
        fin >> v[i];
}

bool valid(int k) {
    if(sol[k] < sol[k-1] && k > 1)  return false;
    int sum = 0;
    for(int i  = 1; i <= k; i++)
        sum += sol[i];
    return sum <= s;
}

bool solutie(int k) {
    if (k != 6) return false;
    int sum = 0;
    for(int i  = 1; i <= k; i++)
        sum += sol[i];
    return sum == s;
}

void afis() {
    found = true;
    for(int i = 1; i <= 6; i++)
        fout << sol[i] << ' ';
}

void backtracking(int k) {
    for(int i = 1; i <= n && !found; i++) {
        sol[k] = v[i];
        if(valid(k)) {
            if(solutie(k) && !found)
                afis();
            else if(k < 6)
                backtracking(k+1);
        }
    }
}


int main() {
    citire();
    backtracking(1);
    if(!found) fout << -1;
}