import java.io.*;
public class QuestionTwo{
	public static void main(String [] args){
		try{
			PrintWriter thirtyOrMore = new PrintWriter("largeCourses.txt");
			String s = " ";
			int n= 0;
			while(!Console.EndOfFile()){
				s = Console.readToken();
				n = Console.readInt();
				if(n>=30){
					thirtyOrMore.println(s + " ," + n);
				}
			}
			thirtyOrMore.close();
		}
		catch( Exception e)
		{
			System.out.println("Could not read file");
		}

	}
}