由于题目要求是要求最小值，如果能有一种工具能够自动将我们输入的值进行排序就好了。由此，很容易就会想到使用容器multiset，它能够将我们输入的数值自动进行从小到大的顺序进行排列。这样，当我们输入完数值后，直接调用函数begin(),取容器中的第一个值即为容器中的最小值了。-The subject requirement is to require the minimum, if there is a tool that can automatically input value like sort. As a result, it is easy to think of the container a multiset, it can automatically be arranged from small to large order of our input values​ ​ . This way, when we have finished entering the value directly call the function of the begin (), take the container in a value is the minimum value of the container.