/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Ideone i = new Ideone();
	}
 
	public Ideone(){
	//	new A(3,20);
		new N(3,20);
	}
 
	class N extends java.util.Random{
		N(int s,int n){
		super(s);
		for(float a,v=0;
				n-->0;
				System.out.println(v*Math.sqrt(-2*Math.log(a)/a)))
			for(a=0;
					a>=1|a==0;
					a=v*v+(v=2*nextFloat()-1)*v)v=2*nextFloat()-1;
	}
 
	class A extends java.util.Random{A(int s,int n){super(s);for(s=0;++s<n;System.out.print(Math.sqrt(-2*Math.log1p(nextDouble()))*Math.cos(2*Math.PI*Math.cos(nextDouble()))));}}
 
class B extends java.util.Random{
	B(int s,int n){
		super(s);
//		for(s=0;s++<n;
		for(;n-->0;
		System.out.println(Math.sqrt(-2*Math.log(nextDouble()))*Math.cos(2*Math.PI*nextDouble())));
	}
 
	}
}
}

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