#include <bits/stdc++.h>

using namespace std;

const int Nmax = 1000000;

int phi[Nmax + 1];
int C, D;

int main()
{
    ifstream in("mins.in");
    ofstream out("mins.out");

    long long sol = 0;

    in >> C >> D;
    C--; D--;

    for ( int i = 1; i <= C; ++i )
        for ( int j = 1; j <= D; ++j )
            if ( __gcd(i, j) == 1 )
                sol++;

    out << sol;

    return 0;
}