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Cod sursa(job #830054)
#include <fstream>
using namespace std;
ofstream g;
int x[19], n, k;
void solutie () {
int i;
for (i=1; i<=k; i++) g << x[i] <<' ';
g <<'\n';
}
void back (int vf) {
int i;
for (i=x[vf-1]+1; i<=n-k+vf; i++) {
x[vf] = i;
if (vf == k) solutie();
else back(vf+1);
}
}
int main () {
ifstream f ("combinari.in");
f >> n >> k;
f.close();
g.open ("combinari.out");
back(1);
g.close();
return 0;
}