#include <iostream>
using namespace std;
int main() {
string encrp , res ;
while(getline(cin , encrp))
{
for(int i =0 ; i < encrp.size() ; i++)
{
if((encrp[i]>='a' && encrp[i] <='y') || (encrp[i]>= 'A' &&encrp[i] <= 'Y' ) )
{
res.push_back(encrp[i] +1) ;
}
else if(encrp[i]== 'z' )
{
res.push_back('a') ;
}
else if(encrp[i]=='Z')
{
res.push_back('A') ;
}
else
{
res.push_back(encrp[i]);
}
}
cout<<res<<endl ;
}
}
// 64 位输出请用 printf("%lld")



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