#include <iostream>
#include <string>
using namespace std;
string Code(string s)
{
for(int i=0;i<s.size();i++)
{
if(s[i]>='a'&&s[i]<='y')s[i] = s[i]+1;
else if(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';
}
return s;
}
int main() {
string s;
getline(cin,s);
cout<<Code(s);
}
// 64 位输出请用 printf("%lld")

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