Water Bill in java

In this task, you need to identify the water bill for a household

User Task:

You have to input the total liter of water used by a house and output the total water bill. The water bill is calculated as follows:

For first 100 litres: Rs. 15 per litre

For next 100 litres: Rs. 14 per litre

After 200 litres: Rs. 12 per litre

Example

Input: 105

Output: 1570

Solution:–

import java.util.*;
import java.lang.*;
import java.io.*;

public class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{int sum=0;
      int min,min2;
      
	  Scanner sc=new Scanner(System.in);
      int wat=sc.nextInt();
      
      if(wat<=100){
        sum=100*15;
        System.out.println(sum);
      }

      else if(wat>100 && wat<=200)
        {
          min2=wat-100;
          sum=(100*15)+(min2*14);
          System.out.println(sum);  
        }
        
      else
        {
          min=wat-200;
          sum=(100*15)+(100*14)+(min*12);
          System.out.println(sum);
        }
    }
}