题解

#include<bits/stdc++.h>
using namespace std;
int main(){
char s;
cin>>s;
if(s<='z'&&s>='a')cout<<'a';
else if(s<='Z'&&s>='A')cout<<'A';
else if(s<='9'&&s>='1')cout<<0;
else cout<<"other";
return 0;
}