C :

#include <stdio.h>
 
int main()
{
    int a;
    float b;
    scanf("%d",&a) ;
 b=0.1037;
        printf("%.4f\n",b);
    return 0;
}

C++ :

#include <iostream> 
using namespace std;
class wo
{
public:
   void count() 
   {

    int a; 

    float b; 

    while(scanf("%d",&a) != EOF) 

 {if (a==1) b=252.0/2431; 

 else  

b=0.0001;     

   printf("%.4f\n",b);} 
} 

};
int main()
{
	wo a;
	a.count();
}

Java :

import java.text.DecimalFormat;
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		
		float f[] = new float[9];
		Scanner reader = new Scanner(System.in); 
		int a;
		DecimalFormat df=new DecimalFormat("#0.0000");
		while(reader.hasNext()){
			a = reader.nextInt();
			if(a==1){
				f = null;
				f =new float[1];
				f[0]=(float) 252/2431;
				
				
			}
			else {
				f = null;
				f =new float[1];
				f[0] = (float) 0.0001;
			}
			for(int i=0;i<f.length;i++){
				
				System.out.println(df.format(f[i]));
			}
		}
	}
}