FlogJump

// you can also use imports, for example:
// import java.util.*;
 
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
 
class Solution {
    public int solution(int X, int Y, int D) {
        // write your code in Java SE 8
        if ((Y-X)%D == 0) return ((Y-X)/D);
        else return ((Y-X)/D) + 1;
      
    }
}