#include <bits/stdc++.h>
using namespace std;
typedef long long LL;

void fun(int a, int b){
    if (b < a){
        int tmp = b;
        b = a;
        a = tmp;
    }
    int k = b;
    while (b % a != 0) b += k;
    printf("%d", b);
}

int main()
{
    int a = 30, b = 40;
    fun(a, b);
    return 0;
}