include

using namespace std; int main(){ //vector:

//头文件：#include <vector>
//定义：vector <int> a
//定义长度(10)：vector <int> a(10) 
//插入：insert()
//清空：clear() 
//判断是否为空：empty() 

//deque <T> 删除首尾 
return 0;

}