#include<iostream>
#include<string>
using namespace std;
int main()
{
    string a;
    getline(cin,a);
    for(int i=0;i<a.size();i++)
    {
        if(a[i]>='a' && a[i]<='z') cout<<(char)((a[i]+1-'a')%('z'-'a'+1)+'a');
        else if(a[i]>='A' && a[i]<='Z') cout<<(char)((a[i]+1-'A')%('Z'-'A'+1)+'A');
        else cout<<a[i];
    }
    return 0;
}