#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
int main() {
	vector < char > a;
	
	for (char i = 'a'; i <= 'z'; i++)
	{
		a.push_back(i);
	}
	ll n;
	char c; cin >> c >> n;
	ll t = ((int)c - 97 + n) % 26;
	
	cout << a[t];
}