#include<bits/stdc++.h> using namespace std; int main(){ char n; cin>>n; if(int(n)>=65&&int(n)<=90){ cout<<"upper"; return 0; } if(int(n)>=97&&int(n)<=122){ cout<<"lower"; return 0; } if(int(n)>=49&&int(n)<=57){ cout<<"digit"; return 0; } else{ cout<<"other"; return 0; } return 0; }