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#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n, x;
int a[100];
void Write();
void Dyn(int nr, int length);
int main()
{
f >> n >> x;
Dyn(0, 0);
return 0;
}
void Write()
{
for ( int i = 0; i < x; i++)
g << a[i];;
g << '\n';
}
void Dyn(int nr, int length)
{
int i;
if (length == x)
{
Write();
return;
}
for (i = nr + 1; i <= n; i++){
a[length] = i;
Dyn(i, length + 1);
}
}