#include <iostream>
using namespace std;
int main() {
string s;int sum=0;
cin>>s;
for(int i=0;i<s.length();++i){
sum+=s[i]-'0';
}
bool f = true;
for (int i = 0; i < s.length() / 2; ++i) {
if (s[i] != s[s.length() - i - 1]) {
f = false;
break;
}
}
if (!f) {
cout << "He'll be fired.";
return 0;
}
long long num = 0;
for (int i = 0; i < s.length(); ++i) {
num = num * 10 + (s[i] - '0');
}
if(num%sum==0)
cout<<"Best mentor.";
else
cout<<"He's good.";
}
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