import java.util.*;
import java.io.*;

public class AnalyseSat {


    private static double log2(double x){
	return Math.log(x)/Math.log(2.0);
    }    

    private static double psat(int k){return 1.0 - 1.0/Math.pow(2.0,(double)k);}
    //
    // probability a clause of length k is satisfied
    //

    private static double entropy(int k,int l){
	double p = psat(k);
	return (double)l * p * log2(p) * -1.0;
    }
	

    public static void main(String[] args) {
	int n   = Integer.parseInt(args[0]); // boolean variables
	int k   = Integer.parseInt(args[1]); // literals in a clause
	int lLo = Integer.parseInt(args[2]); // smallest number of clauses
	int lHi = Integer.parseInt(args[3]); // largest number of clauses
	for (int l=lLo;l<=lHi;l++)
	    System.out.println(l +" "+ k +" "+ entropy(k,l));
    }
}