public class Review {

    public static void main(String[] args) {

        // Run a simulation in which you pretend to toss a fair
        // coin N times, reporting "Heads" or "Tails" each time:

        int N = Integer.parseInt(args[0]);
        int numHeads = 0;
        int numTails = 0;
        for (int i = 1; i <= N; i++) {
            double r = Math.random();
            if (r < 0.5) {
                //System.out.println("Heads");
                numHeads++;
            }
            else {
                //System.out.println("Tails");
                numTails++;
            }
        }
        System.out.println("Number of heads = " + numHeads);
        System.out.println("Number of tails = " + numTails);
    }

}