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Cod sursa(job #666725)
#include <fstream>
using namespace std;
int N, M;
int X[20];
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int cont(int k) {
int i;
for (i=1;i<k;i++)
if (X[i] == X[k])
return 0;
return 1;
}
void back(int k) {
if (k>M) {
for (int j = 1; j<=M;j++)
fout<<X[j]<<" ";
fout<<"\n";
return;
}
int i;
for (i=X[k-1]+1;i<=N;i++) {
X[k] = i;
back(k+1);
}
}
int main() {
fin>>N>>M;
back(1);
return 0;
}