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Cod sursa(job #882659)
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n,k,st[20],m;
void afis()
{
int i;
for (i=1;i<=m;i++)
g<<st[i]<<" ";
g<<'\n';
}
void back(int t)
{
int i;
if (t==m+1)
afis();
else if (t<=m)
{
for (i=st[t-1]+1;i<=n-m+t;i++)
{
st[t]=i;
back(t+1);
}
}
}
int main()
{
f>>n>>m;
back(1);
return 0;
}