// 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 A, int B, int K) {
        // write your code in Java SE 8
        int n=0;
		if(A % K == 0) {
			n = A/K -1;
		}else {
			n = A/K;
		}
		return B/K - n ;
    }
}

// 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 A, int B, int K) {
        // write your code in Java SE 8
        int n=0;
		if(A % K == 0) {
			n = A/K -1;
		}else {
			n = A/K;
		}
		return B/K - n ;
    }
}

// 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 A, int B, int K) {
        // write your code in Java SE 8
        int n=0;
		if(A % K == 0) {
			n = A/K -1;
		}else {
			n = A/K;
		}
		return B/K - n ;
    }
}