#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001



int main() {
	
	int n;
	cin>>n;
	string s;
	cin>>s;
	
	rep(i,s.size()){
		int t = s[i] - 'a';
		t = 25-t;
		s[i] = 'a' + t;
	}
	cout<<s<<endl;
	
    return 0;
}