Number

/*
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 */

//package javaapplication16;
/**
 *
 * @author tuukkatu
 */
public class JavaApplication16 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) 
    {
        // TODO code application logic here
        
        IO io = new IO();
        
        long number = io.nextLong();
        
        long money = 0;
        
        long costA = io.nextLong();
        
        long kustannus = 0;
        
        long costB = io.nextLong();
        
        while(costA < ((number/2) + 1) * costB) {
            number = number/2;
            kustannus += costA;
            if (number == 1) {
                break;
            }
        }
        
        kustannus += costB * number;
        
//        while (number >= 1)
//        {
//            double get1 = divide(number, costA);
//            
//            double get2 = reduce(number, costB);
//            
//            if (get1 > get2)
//            {
//                number = number / 2;
//                
//                money = money - costA;
//            }
//            else
//            {
//                number--;
//                
//                money = money - costB;
//            }
//        }
        
        io.println(kustannus);
        
        io.close();
    }
    
    private static double divide(long number,
                                 long costA)
    {
        long newNumber = number / 2;
        
        long reduction = number - newNumber;
        
        return (double)reduction / (double)costA;
        
    }
    
    private static double reduce(long number,
                                 long costB)
    {
        return (double)(1) / (double)(costB);
    }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: ACCEPTED

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: ACCEPTED

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: ACCEPTED

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: ACCEPTED

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: ACCEPTED

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: ACCEPTED

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: WRONG ANSWER

Test 24

Verdict: ACCEPTED

Test 25

Verdict: WRONG ANSWER

Test 26

Verdict: ACCEPTED

Test 27

Verdict: ACCEPTED

Test 28

Verdict: WRONG ANSWER

Test 29

Verdict: ACCEPTED

Test 30

Verdict: WRONG ANSWER