题解

#include <bits/stdc++.h>
using namespace std;
int main(){
	char s1[500],s2[105];
    int n;
    cin>>s1>>n;
    for(int i=0;i<n;i++){
        int x;
        cin>>x;
    	if(x==1){
            cin>>s2;
            strcat(s1,s2);
        }else if(x==2){
            cout<<strlen(s1)<<endl;
        }else if(x==3){
            cin>>s2;
            if(strcmp(s1,s2)>0){
             	cout<<s1<<endl;
            }else{
             	cout<<s2<<endl;   
            }
        }
    }
    return 0;
}