Cod sursa(job #2120181)

Utilizator nicu_serteSerte Nicu nicu_serte Data 2 februarie 2018 00:17:50
Problema Combinari Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.73 kb
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
#define nmax 20
int n, k, st[nmax], viz[nmax];
void solutie()
{
    int i;
    for(i=1; i<=k; i++)
        fout<<st[i]<<' ';
    fout<<'\n';
}
bool valid(int top)
{
    if(top==1)
        return true;
    if(viz[st[top]])
        return false;
    if(st[top-1]<st[top])
        return true;
    return false;
}
void bt(int top)
{
    if(top==k+1)
        solutie();
    else for(int i=top; i<=n; i++)
        {
            st[top]=i;
            if(valid(top))
            {
                viz[st[top]]=1;
                bt(top+1);
                viz[st[top]]=0;
            }
        }
}
int main()
{
    fin>>n>>k;
    bt(1);
    return 0;
}