题解

#include <bits/stdc++.h>
using namespace std;
int main(){
    string s;
    cin>>s;
    for(int i=0;i<s.length();i++){
        if(s[i]>='a' && s[i]<='w'){
            cout<<char(s[i]+1)<<char(s[i]+2)<<char(s[i]+3);
        }else if(s[i]=='x'){
            cout<<"yza";
        }else if(s[i]=='y'){
            cout<<"zab";
        }else if(s[i]=='z'){
            cout<<"abc";
        }else{
            cout<<s[i];
        }
    }
    return 0;
}