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#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n, x[20], f[11], m;
void backtracking(int pas)
{
if(pas==m+1)
{
for(int i=1;i<=m;i++)
{
fout<<x[i]<<" ";
}
fout<<"\n";
return;
}
for(int i=x[pas-1]+1; i<=n; i++)
{
x[pas]=i;
backtracking(pas+1);
}
}
int main()
{
fin>>n>>m;
backtracking(1);
return 0;
}