现在，有两个正整数A和B，例如A是345，B是478，现在，需要把B插入到A里，

而A有三位，所以有四个位置选择，所得结果分别是：

478345, 347845, 344785, 345478

我们通过对比可以知道，在这当中最小的一个是344785

这两个正整数长度不超过100000位，各个位均不包含数字0

现在的目标是，要找出插入后所能得到的最小的整数，输出这个整数

-Now, there are two positive integers A and B, for example, A is 345, B is 478, and now need to be inserted into the A in B, and A three, so there are four location choices, the results are: 478345, 347845 , 344,785, 345,478, we can know by comparing, in this one is among the smallest positive integer 344785 length of the two is not more than 100,000, all spaces are not included in the number of 0 is now the goal is to find out that can be inserted into the the smallest integer, the output of the integer