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#include <iostream>
#include <fstream>
#define NUM 20
int v[NUM];
int n, k;
using namespace std;
ofstream g("combinari.out");
void afisare()
{
for(int i = 1; i <= k; i++)
g << v[i] << " ";
g << '\n';
}
void backt(int a)
{
for(int i = v[a - 1] + 1; i <= n; i++)
{
v[a] = i;
if(a == k)
afisare();
else
backt(a + 1);
}
}
int main()
{
ifstream f("combinari.in");
f >> n >> k;
f.close();
backt(1);
g.close();
}