Cod sursa(job #1970873)

Utilizator andreiutu111Noroc Andrei Mihail andreiutu111 Data 19 aprilie 2017 17:48:35
Problema Combinari Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.7 kb
#include <bits/stdc++.h>

using namespace std;

int N,K,st[20];


int sol(int k){
    return k==K;
}

int valid(int k)
{

    for(int i=1 ; i < k ;i++)
        if(st[i]==st[k])
            return 0;

    if(k>1 && st[k]<=st[k-1])
            return 0;

    return 1;
}

void afis(int k){

    for(int i=1 ; i<=k ; ++i)printf("%d ",st[i]);
    printf("\n");

}

void back(int k){

    for(int x=1 ; x<=N ; ++x)
    {
        st[k]=x;

        if(valid(k))
            if(sol(k))afis(k);
            else back(k+1);

    }

}

int main()
{
    freopen("permutari.in","r",stdin);
    freopen("permutari.out","w",stdout);
    scanf("%d%d",&N,&K);

    back(1);
}