digit (task1)

// Task1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <stack>
#include <sstream>

using namespace std;

int main()
{
    int a, b, p1, p2;
    stringstream sequence;
    stringstream result;

    cin >> a >> b >> p1 >> p2;

    for (int i = a; i <= b; i++) {
        sequence << i;
    }

    for (int i = 0; i < sequence.str().length(); i++) {
        int x = sequence.str()[i] - '0';

        if ((x % p1 != 0) && (x % p2 != 0)) {
            result << x;
        }
        else {
            continue;
        }
    }

    cout << result.str().length();

    return 0;
}