#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#include <iostream>

#include <vector>

#include <algorithm>

using namespace std;

void getCombination(int n, int k, vector<int>& solution, vector< vector<int> >& result );

vector<vector<int> > combine1(int n, int k);

vector<vector<int> > combine2(int n, int k);

vector<vector<int> > combine(int n, int k) {

}

vector<vector<int> > combine1(int n, int k) {

}

void getCombination(int n, int k, vector<int>& solution, vector< vector<int> >& result ){

}

vector<vector<int> > combine2(int n, int k) {

}

void printResult(vector<vector<int> >& result)

}

int main(int argc, char** argv)

}