#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];
}
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