#include <iostream>
#include<math.h>
#include <iomanip>
#include<cstdio>
#include<string>
#include<map>
#include<vector>
#include<list>
#include<algorithm>
#include<stdlib.h>
#include<iterator>
#include<sstream>
#include<string.h>
#include<stdio.h>
using namespace std;

long long gcd(long long a,long long b)
{
    long long  big=a;
    long long  smal=b;
    long long  ck;
    if(big<smal)
    {
        ck=a;
        a=b;
        b=a;
    }
    long long temp;
    while(smal>0)
    {
        temp=big%smal;
        big=smal;
        smal=temp;
    }
    return big;
}

long long gys(long long a,long long b)
{
    long long  kk;
    long long ak=a;
    long long bk=b;
    kk=ak*bk/gcd(ak,bk);
    return kk;
}



int main()
{
    int m,n;
    while(cin>>m>>n)
    {
        int temp=gcd(m,n);
        cout<<m+n-temp<<endl;
    }
    return 0;
}