1 #include<iostream>
2 #include<cmath>
3 #include<cstdio>
4 using namespace std;
5 int tot=0;
6 double ans;
7 int main()
8 {
9 int n;
10 cin>>n;
11 if(n%123>=97&&n%123<=122)
12 {
13 cout<<(char)(n%123);
14 return 0;
15 }
16 else if(n%91>=65&&n%91<=90)
17 {
18 cout<<(char)(n%91);
19 return 0;
20 }
21 else cout<<"*";
22 return 0;
23 }