#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
#include<math.h>
#define all(x) x.begin(),x.end()
#define pb push_back
#define ll long long 
#define P pair<double,double>
#define LP pair<ll,ll>
using namespace std;
int main() {
	int n;
	char a;
	int k = 0;
	string s;
	cin >>n>>s;
	for (auto& x : s) {
		x = 'a' + 'z' - x;
	}
	cout << s << endl;
	return 0;
}