#include <bits/stdc++.h>
#define ll long long
using namespace std;
ifstream in("mins.in");
ofstream out("mins.out");
int ans, c,d;
int cmmdc(int a, int b)
{
    if(!b)return a;
    else return cmmdc(b,a%b);
}
int main()
{
    in >> c >> d;
    --c,--d;
    for(int i =1;i<=c;i++)
        for(int j=1;j<=d;j++)
          if(cmmdc(i,j)==1)ans++;
           out<<ans;



    return 0;
}