#include<bits/stdc++.h>
using namespace std;

//C++STL中全排列函数next_permutation的使用
// https://blog.csdn.net/ac_gibson/article/details/45308645
int main()
{
	int a[3] = { 3,1,2 };
	
	//快速排序
	sort(a, a + 3);

	//全排列
	do
	{
	  cout << a[0] << a[1] << a[2] << endl;
	} while (next_permutation(a, a + 3));

	return 0;
}