#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char a,b,c,d; cin>>a>>b>>c>>d; a=(a+1-"a")%26+a b=(b+1-"b")%26+b c=(c+1-"c")%26+c d=(d+1-"d")%26+d cout<<a<<b<<c<<d; return 0; }