//题解
#include <bits/stdc++.h>
using namespace std;
int main(){
string s,s1="";
getline(cin,s);
for(int i=0;i<s.size();i++)
{
if(s[i]>='A'&&s[i]<='Z')
if(s[i]!='Z')
s1+=char(s[i]+1);
else
s1+=char(s[i]-25);
else if(s[i]>='a'&&s[i]<='z')
if(s[i]!='z')
s1+=char(s[i]+1);
else
s1+=char(s[i]-25);
else
s1+=s[i];
}
cout<<s1<<endl;
return 0;
}