1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class row {

    public static void main(String[] args) throws IOException {

        System.err.println("Hello World, it's row here!");
        System.err.println("Start reading....");

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        String line = reader.readLine();
        String[] splitedLine = line.split(" ");

        System.err.println("Read: " + line);
        System.err.println("Splitted on " + splitedLine.length + " parts: " + Arrays.toString(splitedLine));


        long k = Long.parseLong(splitedLine[0]);
        long a = Long.parseLong(splitedLine[1]);
        long b = Long.parseLong(splitedLine[2]);

        reader.close();

        long result = solve(k, a, b);

        System.out.println(result);

    }

    public static long solve(long k, long a, long b) {

        long counter = 0;

        for (long i = a; i <= b; i++) {
            if (sumDigitsSquares(i) * k == i) {
                System.err.println("Found i=" + i);
                counter += 1;
            }
        }

        return counter;

    }

    private static int sumDigitsSquares(long i) {

        int sum = 0;

        while (i > 0) {
            long digit = i % 10;
            sum += digit * digit;
            i = i / 10;
        }

        return sum;
    }





}