#include<iostream>
using namespace std;
class person{
    public:
    string name;
    int age;
    person(string n.,int a):name(n),age(a){}
    person&operator++(){
        ++age;return*this;}
};
int main() {
    stringh n;int a;
    cin>>n>>a;
    person p(n,a);
    if (a<0||a>120)cout<<"Invalid input";
    else{
        ++p;
        cout<<"update age of"<<p.name<<":"<<p.age;
    }
    return 0;
    }
}
}