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Cod sursa(job #895774)
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n,a,v[20];
void afis (int x[20],int nx)
{
int i;
for(i=1;i<=nx;i++)
{
g<<x[i]<<" ";
}
g<<endl;
}
void combinari(int k)
{
int i;
for (i=v[k-1]+1;i<=n;i++)
{
v[k]=i;
{
if (k<a) {combinari(k+1);}
else {afis (v,a);}
}
}
}
int main()
{
f>>n>>a;
combinari(1);
}