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#include <cstdio>
using namespace std;
int n, k, sol[20];
void backtracking(int nivel)
{
if(nivel==k+1)
{
for(int i=1; i<=k; i++)
{
printf("%d ", sol[i]);
}
printf("\n");
}
else
{
for(int i=sol[nivel-1]+1; i<=n; i++)
{
sol[nivel]=i;
backtracking(nivel+1);
}
}
}
int main()
{
freopen("combinari.in", "r", stdin);
freopen("combinari.out", "w", stdout);
scanf("%d %d", &n, &k);
backtracking(1);
return 0;
}