#include <iostream>
using namespace std;

int main() {
    string encrp  , res ;
    while(getline(cin , encrp))
    {
        for(int i =0 ; i < encrp.size() ; i++)
        {
            if((encrp[i]>='a' && encrp[i] <='y') || (encrp[i]>= 'A' &&encrp[i] <= 'Y' ) )
            {
                res.push_back(encrp[i] +1) ; 
            }
            else if(encrp[i]== 'z' )
            {
                res.push_back('a') ; 
            }
            else if(encrp[i]=='Z')
            {
                res.push_back('A') ; 
            }
            else 
            {
                res.push_back(encrp[i]); 
            }
        }
        cout<<res<<endl ; 
    }
    
}
// 64 位输出请用 printf("%lld")