// 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) {
        return (B==0) ? 1 : B/K + ( (A==0) ? 1 : (A-1)/K);
    }
}

// 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) {
        return (B==0) ? 1 : B/K + ( (A==0) ? 1 : (-1)*(A-1)/K);
    }
}

// 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) {
        return (B==0) ? 1 : B/K + ( (A==0) ? 1 : (-1)*(A-1)/K);
    }
}

// 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) {
        return (B==0) ? 1 : B/K + ( (A==0) ? 1 : (-1)*(A-1)/K);
    }
}