极简题解|字符串操作

课后作业秒了

#include<iostream>
#include<string>
using namespace std;
int main(){
    string a,d;
    cin>>a;
    int b,c;
    cin>>b;
    for(int i=0;i<b;i++){
        cin>>c;
        if(c==1){
            cin>>d;
            a+=d;
        }
        else if(c==2){
            cout<<a.size()<<endl;
        }
        else if(c==3){
            cin>>d;
            if(a>d){
                cout<<a<<endl;
                continue;
            }
            cout<<d<<endl;
        }
    }
    return 0;
}