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
67
68
69
70
71
72
#include <iostream>
using namespace std;
int najmniejsza(unsigned long long x, unsigned long long y)
{
    unsigned long long od = x;
    unsigned long long k = y;
    unsigned long long c = k;
    bool ta = false;
    while(x != true)
    {
        if(k >= od) return k;
        k += c;
    }
}
int policz(unsigned long long liczba, unsigned long long ka)
{
    unsigned long long spr = liczba;
    unsigned long long test = 1;
    unsigned long long licznik = 0;
    while(test != 0)
    {
        if(spr % test == spr)
        {
            test = 0;
        }
        else
        {
            test *= 10;
            licznik++;
        }
    }
    unsigned long long dzielenie = liczba;
    unsigned long long i = 0;
    unsigned long long suma = 0;
    while(i != licznik)
    {
        suma += (dzielenie % 10)*(dzielenie % 10);
        dzielenie /= 10;
        i++;
    }
    unsigned long long wsp = ka;
    unsigned long long spr_dwa = liczba;
    if(suma * wsp == spr_dwa)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}
int main()
{
unsigned long long k;
unsigned long long a;
unsigned long long b;
cin >> k;
cin >> a;
cin >> b;
unsigned long long klon_k = najmniejsza(a,k);
unsigned long long ostatecznie = 0;
bool juz = false;
while(juz != true)
{
    if(policz(klon_k,k) == 1) ostatecznie++;
    klon_k += k;
    if(klon_k > b) juz = true;

}
cout << ostatecznie;
return 0;
}