#include <bits/stdc++.h>
using namespace std;
int main()
{
	double n,m,sum=0,um,km=1,dcsl;
	cin>>n>>m;
	dcsl=(1+n)*n/2+(1+m)*m/2;
	for(int i=2;i<=n;i++)
	{
		for(int k=2;k<=m;k++)
		{
		um=i*k;
			for(int r=i+k;r>=1;r--)
			{
				if(i%r==0&&k%r==0)
				{
					um=um/r;
					r=1;
				}
			}
			sum=sum+um;
		}
	}
	cout<<sum+dcsl-1;
}

tle了