import java.util.*;

public class Rational {
	Rational(int num, int denom) {
		this.num = num;
		this.denom = denom;
	}
	public String toString() {return num + "/" + denom;}


	public static void main(String [] args) {
		Rational 
			r = new Rational(20, 5);

		System.out.println(r);
	}

	int num, denom;
}