Solucion 12342 Calculadora de taxas

 * and open the template in the editor.
 */
package UVA_Pendientes;

import java.util.Scanner;

/**
 *
 * @author DAM116
 */
public class UVA12342_TaxCalculator {

    public static void main(String[] args) {
        Scanner entrada = new Scanner(System.in);
        int casos, num;
        casos = entrada.nextInt();
        for (int i = 0; i < casos; i++) {
            num = entrada.nextInt();
            System.out.println("Case " + (i + 1) + ": " + devolverImpuesto(num));
        }
    }

    static int devolverImpuesto(int num) {
        double diff, taxa = 0;
        if (num > 180000) {
            num -= 180000;
            if (num > 0) {
                diff = Math.min(num, 300000);
                num -= diff;
                taxa += 0.1 * diff;
            }
            if (num > 0) {
                diff = Math.min(num, 400000);
                num -= diff;
                taxa += 0.15 * diff;
            }
            if (num > 0) {
                diff = Math.min(num, 300000);
                num -= diff;
                taxa += 0.2 * diff;
            }

            if (num > 0) {
                taxa += 0.25 * num;
            }
            taxa = Math.max(2000, taxa);
        }
        if (taxa != 0 && taxa != 2000) {
            taxa = Math.round(taxa + 0.49);
        }
        return (int) taxa;
    }
}