#include <stdio.h>
#include <math.h>
int main() {
    long long a, b, n, m, k;
    scanf("%lld %lld", &a, &b);
    long long max = 0;
    n = a;
    m = b;
    while ((n % m) !=
            0) { //辗转相除法,直至余数为0,被除数即为结果
        k = n % m;
        n = m;
        m = k;
    }
    max = k;
    long long min = (a * b) / max;
    long long x = min + max;
    printf("%lld", x);
    return 0;
}