look look吧，friend

#include <bits/stdc++.h>
using namespace std;
int a,b,x[4],y[4],bz;
int main()
{
cin>>a>>b;
for(int i=1;i<=3;i++)
{
cin>>x[i]>>y[i];
if(b/y[i]*x[i]>=a)
{
bz=1;
cout<<"YES";
return 0;
}
}
if(bz==0)
{
cout<<"NO";
}

}