#include <iostream>
#include <string>
using namespace std;

string Code(string s)
{
    for(int i=0;i<s.size();i++)
    {
        if(s[i]>='a'&&s[i]<='y')s[i] = s[i]+1;
        else if(s[i]>='A'&&s[i]<='Y')s[i] = s[i]+1;
        else if(s[i]=='z')s[i] ='a';
        else if(s[i]=='Z')s[i] ='A';
    }
    return s;

}



int main() {
    string s;
    getline(cin,s);
    cout<<Code(s);
}
// 64 位输出请用 printf("%lld")