Cod sursa(job #1916537)

Utilizator SaltimbanculAlex Lazar Saltimbancul Data 9 martie 2017 09:44:05
Problema Combinari Scor 80
Compilator cpp Status done
Runda Arhiva educationala Marime 0.57 kb
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n,v[10],niv;
void write()
{
    for(int i=1;i<=niv;i++)
        fout<<v[i]<<" ";
    fout<<'\n';
}
bool valid(int k)
{
    for(int i=1;i<k;i++)
        if(v[i]>=v[k])
            return false;
    return true;
}
void backtrack(int k)
{
    for(int i=1;i<=n;i++)
    {
        v[k]=i;
        if(valid(k))
            if(k==niv) write();
            else backtrack(k+1);
    }
}
int main()
{
    fin>>n>>niv;
    backtrack(1);
    return 0;
}