// 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
    }
}

class Solution {
    public int solution(int A, int B, int K) {
        // write your code in Java SE 8
        if(B/K == 0){
            return 0;
        } else {
            return B/K - A/K + (A%K == 0 ? 1: 0);
        }
    }
}

class Solution {
    public int solution(int A, int B, int K) {
        // write your code in Java SE 8
        return B/K - A/K + (A%K == 0 ? 1: 0);
    }
}

class Solution {
    public int solution(int A, int B, int K) {
        return B/K - A/K + (A%K == 0 ? 1: 0);
    }
}

class Solution {
    public int solution(int A, int B, int K) {
        return B/K - A/K + (A%K == 0 ? 1: 0);
    }
}

class Solution {
    public int solution(int A, int B, int K) {
        return B/K - A/K + (A%K == 0 ? 1: 0);
    }
}

class Solution {
    public int solution(int A, int B, int K) {
        return B/K - A/K + (A%K == 0 ? 1: 0);
    }
}