/**
 * My own big Rational class,
 */

import java.math.*;

public class Rational {
	private BigInteger numerator=0;
	private BigInteger denominator=1;

  /* constructors */
	Rational(BigInteger n, BigInteger d)
	{	numerator=n; denominator=d;
	}
	Rational(double n)
	{	numerator=(BigInteger)n; denominator=1;
	}
	Rational(int n)
	{	numerator=(BigInteger)n; denominator=1;
	}

	Rational(BigInteger n)
	{	numerator=n; denominator=1;
	}

	public Rational reduce()
	{	BigInteger c = numerator.gcd(denominator);
		numerator.divide(c); denominator.divide(c);
	}
	public bool isGreaterThan(Rational r)
	{	return((r.numerator*denominator -r.denominator*numerator)>0.0);
	}
	public Rational prod(Rational r)
	{	numerator = numerator*r.numerator;
		denominator = denominator* r.denominator;
		return this;
	}
}