#include<iostream>

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') a[i] = (a[i] - 'a' + 1) % 26 + 'a';//先求偏移量
        else if(a[i] >= 'A' && a[i] <= 'Z') a[i] = (a[i] -'A' + 1) % 26 + 'A'; 
    }
    cout << a << endl;

    return 0;
}