题解

#include<iostream>
#include<string>
using namespace std;
int main(){
    string s;
    cin>>s;
    for(int i=0;i<s.size();i++){
        if(s[i]=='z') s[i]-=25;  //如果s[i]为z.
        else s[i]++;  //s[i]不为z.
    }
    cout<<s;
    return 0;
}