#include<bits/stdc++.h>
#define int long long
using namespace std;

int n;
string s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

signed main(){
    cin >> n;
    for (int i = 0; i < 26; i++){
        cout << s[(n + i) % 26];
    }
	return 0;
}