称不上黄题！！！

一点点模拟的·概念，个人认为称不上“普及-”

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

int main(){
    string str;
    cin >> str;
    string str1, str2;
    int x, t;
    cin >> x;
    for(int i = 1; i <= x; i ++){
        cin >> t;
        if(t == 1){
            cin >> str1;
            str += str1;
        }else if(t == 2){
            cout << str.size() << endl;
        }else{
            cin >> str2;
            cout << max(str, str2) << endl;
        }
    }
    return 0;
}