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Cod sursa(job #154002)
#include <fstream>
using namespace std;
int sol[19];
int nr, n, p;
ofstream fout("combinari.out");
ifstream fin("combinari.in");
void afisare() {
int i;
for (i = 1; i <= p; i++)
fout << sol[i] << " ";
fout << endl;
}
void back(int k) {
int v = n - p + k, i ;
for(i = sol[k-1] + 1; i <= v; i++) {
sol[k] = i;
if (k == p) {
afisare();
continue;
}
back(k+1);
}
}
int main() {
fin >> n >> p;
back(1);
fout.close();
return 0;
}