题目描述

输入描述

输出描述

样例输入

add
book

样例输出

串1小于串2

代码填空：

#include<iostream>
#include<string>
using namespace std;
class MyString
{
    private:
    string s;
    public:
    MyString(std::string q);
    friend bool operator<(MyString &s1, MyString &s2);
    friend bool operator>(MyString &s1, MyString &s2);
    friend bool operator==(MyString &s1, MyString &s2);
};
 
//pdsu-c1
//pdsu-c1

int main()
{
    string a,b;
    cin>>a>>b;
    //pdsu-c2
    //pdsu-c2
    return 0;
}