#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 c1; int n = 2; cin>>c1; char c2 =((c1-65)+n)%26+65; cout<<c2<<endl; return 0; }