#include<iostream>
#include<string>
using namespace std;
int main()
{
    char[9]name:shan;
    int age;
    cin>>name>>age;
    if(age<0)
    {
        cout<<"Invaild input ";
    }
    else
    {
        cout<<name<<": "<< ++age;
    }
    
    return 0;
}