#include <iostream>
#include <string>
using namespace std;
int main() {
string s;
getline(cin, s);
for (int i = 0; i < s.length(); i++) {
if ((s[i] >= 'a' && s[i] <= 'y') || (s[i] >= 'A' && s[i] <= 'Y')) {
s[i] = s[i] + 1;
} else if (s[i] == 'z') {
s[i] = 'a';
} else if (s[i] == 'Z') {
s[i] = 'A';
}
}
cout << s << endl;
return 0;
}

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