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Cod sursa(job #524796)
#include<fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n,m,k,x[20];
void ps()
{for(int i=1;i<=n;i++)
g<<x[i]<<' ';
g<<'\n';}
void back()
{k=1;x[k]=0;
do { while(x[k]<m-n+k)
{x[k]++;
if(k==n) ps();
else {k++;x[k]=x[k-1];};};
k--;}
while (k);}
int main ()
{
f>>m>>n;
back();
g.close();
return 0;
}