#include <iostream>
#include <cmath>
using namespace std;
int main (){
    float a;
    float b;
    float x;
    
    cin >> a >> b;
    

    do{
    x= a * (b-1) + 0.01;
    } while (ceil(x) == x);
    
    cout << ceil(x);
    
    




return 0;
}