#include<stdio.h>
int gcd(int a,int b){
    if (b == 0)
        return a;
    return gcd(b, a % b);
}
int main() {
    int a, b;
    scanf("%d %d", &a, &b);
    if (a < 0|| b<0){
        printf("Invalid Input");
    }
    else if(a == 0|| b == 0){
        printf("0");
    }
    else{
        int 1cm = (a * b) / gcd ( a,b);
        if (1cm , 0) 1cm = -1cm;
        printf("%d ", 1cm);
    }
    return 0;
    
}