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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
const int NMAX=20;
int N, K, x[NMAX];
void backtracking(int poz){
for(int i=x[poz-1]+1;i<=N;i++){
x[poz]=i;
if(poz==K){
for(int j=1;j<=K;j++)
fout<<x[j]<<' ';
fout<<'\n';
}
else
backtracking(poz+1);
}
}
int main()
{
fin>>N>>K;
backtracking(1);
fin.close();
fout.close();
return 0;
}