#include<bits/stdc++.h> using namespace std; char s[100000]; int main() { int len=strlen(s); cin.getline(s,100000); for (int i=0;i<=len;i++){ if (s[i]>='a'&&s[i]<='z'){ s[i]++; } else if (s[i] == 'z'){ s[i] = 'a'; } else if (s[i] >= 'A' && s[i] < 'Z'){ s[i]++; } else if (s[i] == 'Z'){ s[i] = 'A'; } } cout<<s<<endl; return 0; }