#include<iostream>

using namespace std;
int main()
{
    string s;
    getline(cin,s);
    for(auto &c:s)
    {
        if(c>='a'&&c<='z') c=(c-'a'+1)%26+'a';
        if(c>='A'&&c<='Z') c=(c-'A'+1)%26+'A';
    }
    cout<<s<<endl;
    return 0;
}