#include <iostream>
#include <fstream>
using namespace std;
ifstream in("mins.in");
ofstream out("mins.out");
int cmmdc(int a,int b)
{
    if(a==0)
        return b;
    return cmmdc(b%a,a);
}
int main()
{
    int n,m,i,j,s=0;
    in>>n>>m;
    for(i=1;i<n;i++)
        for(j=1;j<m;j++)
            if(cmmdc(min(i,j),max(i,j))==1)
                s++;
    out<<s;
    return 0;
}