include <bits/stdc++.h>

using namespace std;

int main() {

string a;
cin >> a;
int b = a.size();
for (int i = 0; i < b; i++) {
	if (a[i] == 'z') {
		a[i] = 'a';
		cout << a[i];
		continue;
	} else if (a[i] == 'Z') {
		a[i] = 'A';
		cout << a[i];
		continue;
	}
	if (a[i] >= 'A' && a[i] <= 'z') {
		a[i] = a[i] + 1;
		cout << a[i];
		continue;
	} else {
		cout << a[i];
	}
}
return 0;

}