#include <iostream> using namespace std; string a,getstring; int n,s; int main() { cin>>a; cin>>n; for(int i=0;i<n;i++) { cin>>s; if(s1) { cin>>getstring; a+=getstring; } else if(s2) { cout<<a.length()<<endl; } else { cin>>getstring; if(getstring>a) { cout<<getstring<<endl; } else cout<<a<<endl; } } }

#include<iostream> #include<cstring> using namespace std; int main() { }

课后作业秒了

#include<bits/stdc++.h> using namespace std; int main(){ string s,s1,s2; cin>>s; int a,b; cin>>b; for(int i=0;i<b;i++){ cin>>a; if(a1){ cin>>s1; s+=s1; } if(a2){ cout点赞<<s.size()<<endl; } if(a==3){ cin>>s2; if(s2>s)cout<<s2<<endl; else cout<<s<<endl; } } return 0; }

#include <iostream> using namespace std; int main() { string s,a; int n,t; cin>>s>>n; for (int i=0;i<n;i++) { cin>>t; if(t1) { cin>>a; s+=a; } else if(t2) { cout<<s.size()<<endl; } else if(t==3) { cin>>a; if(a>s) { cout<<a; } else { cout<<s; } } } return 0; }

#include <iostream> #include <string> using namespace std; int main(){ string str; cin>>str; int n; cin>>n; for(int i=0;i<n;i++){ int a; cin>>a; if(a1){ string str1; cin>>str1; str+=str1; }else if(a2){ cout<<str.size()<<endl; }else if(a==3){ string str2; cin>>str2; if(str2>str){ cout<<str2<<endl; }else cout<<str<<endl; } } return 0; }

按照题目进行解题