#include <iostream> #include <cstdio> #include <cstring> #include <cmath> using namespace std; int main(){ char a; cin>>a; if(a>=65&&a<=90){ cout<<"U"; } else if(a>=97&&a<=122){ cout<<"L"; } else if(a>=48&&a<=57){ cout<<"D"; } else{ cout<<"o"; }; return 0; }