C :

#include "stdio.h"
 
int main()
{
    int a;
    float b;
    while(scanf("%d",&a) != EOF)
 {
 if (a==1)
   b=0*0.02+5*0.25+10*0.52+15*0.21;
   else if(a==2)
    b=0*0.02+5*0.1+10*0.18+15*0.45+20*0.24+25*0.01;
 else if (a==0)   
    b=0.1;
     printf("%.1f\n",b);	
 
  }
    return 0;
}

C++ :

#include<stdio.h>
#include<iostream>
using namespace std;
int main(){
	int a;
 while(scanf("%d",&a)==1&&a>=0){		
if(a==0) printf("%.1f\n",0.1);	
else if(a==1) printf("%.1f\n",15*0.1+10*0.02+5*0.06+5*0.04+5*0.15+10*0.2+15*0.1+10*0.01+10*0.15+10*0.14+15*0.01);
else if(a==2) printf("%.1f\n",5*0.06+10*0.02+15*0.1+5*0.04+10*0.15+15*0.2+20*0.1+10*0.01+15*0.15+20*0.14+25*0.01);
else break;}
return 0;
}

Java :

import java.util.*;
public class Main {
	public static void main(String args[]) {
		Scanner cin = new Scanner(System.in);
		int a;
		int b;
		while (cin.hasNext()) {
			a = cin.nextInt(); 
			if (a==1){
System.out.printf("9.6\n");
   
}
else if (a==2){
System.out.printf("14.1\n");}
else if (a==0){
System.out.printf("0.1\n");}
}
	}	}