import java.util.Scanner;

public class ComputeTax
{
   public static void main(String[] args)
   {
      final double RATE1 = 0.15;      // Tax rates
      final double RATE2 = 0.25;
      final double RATE3 = 0.31;

      final double S1 = 21450.0;      // Tax brackets for single
      final double S2 = 51900.0;
      final double M1 = 35800.0;      // Tax brackets for married
      final double M2 = 86500.0;

      char   status;
      double income = 0;
      double tax = 0;
 
      Scanner in = new Scanner(System.in); // Construct Scanner object  
 
      System.out.print("Enter status (S or M) = ");
      status = in.next().charAt(0);         // Read in next char into status
      System.out.print("Enter income = ");
      income = in.nextDouble();             // Read in next double into income

      if ( status == 'S' )
      {  // ***** single
         if ( income <= S1 )
            tax = RATE1 * income;
         else if ( income <= S2 )
            tax = RATE1 * S1 
                  + RATE2 * (income - S1);               
         else
            tax = RATE1 * S1
                  + RATE2 * (S2 - S1)     
                  + RATE3 * (income - S2);
      }
      else
      {  // ***** married
         if ( income <= M1 )
            tax = RATE1 * income;
         else if ( income <= M2 )
            tax = RATE1 * M1
                  + RATE2 * (income - M1);
         else
            tax = RATE1 * M1
                  + RATE2 * (M2 - M1)
                  + RATE3 * (income - M2);
      }

      System.out.println("Tax = " + tax);
   }
}