#include<bits/stdc++.h>
using namespace std;
int main(){
char c;
cin>>c;
if(c=='a'||c=='A'){
cout<<"90~100";
}else if(c=='b'||c=='B'){
cout<<"80~89";
}else if(c=='c'||c=='C'){
cout<<"70~79";
}else if(c=='d'||c=='D'){
cout<<"60~69";
}else if(c=='e'||c=='E'){
cout<<"0~59";
}
return 0;
}
