#include 
#include 
using namespace std;
int main() {
    ios_base::sync_with_stdio(false);
    int a, b;
    cin >> a >> b;
    int res = 0;
    while(a != b) {
        
        if(a > b) {
            swap(a, b);
        }
        int sq = sqrt(a);
        int max_divisor = 1;
        for(int i = 2; i <= sq; i++) {
            if(a % i == 0) {
                max_divisor = a / i;
                break;
            }
        }
        int diff = b - a;
        int tmp = diff / max_divisor;
        if(diff % max_divisor != 0) {
            tmp++;
        }
        b -= tmp * max_divisor;
        res += tmp;
    }
    cout << res << endl;
    return 0;
}