/* 
 * File:   main.cpp
 * Author: virtualdemon
 *
 * Created on December 26, 2009, 6:52 PM
 */
#include <cmath>
#include <set>
#include <fstream>

/*
 * 
 */
using namespace std;
set<double> s;
int main()
{int c, d, i, j;
    ifstream in("mins.in");
    in>>c>>d;
    ofstream out("mins.out");
    for( i=1; i < c; ++i )
        for( j=1; j < d; ++j )
           s.insert( atan2( (double)j, (double)i ) );
    
    out<<s.size();
    return 0;
}