#include<iostream>
#include<string>
using namespace std;
int main()
{
    string username;
    int age;l
    getline(cin,username);
    cin>>age;
    try
    {
        if(username.length()<3)
        {
            throw "Invalid input"
        }
        if(age<10 || age>100)
        {
            throw "Invalid input"
        }
        cout<<"Registration successful";
    }
    catch(char ch*a)
    {
        cout<<a;
    }
    return 0;
}