#include<bits/stdc++.h>
using namespace std;
#define Vector Point
#define Pi acos(-1.0)
#define eps 1e-8
#define maxn 200005
#define ll long long 
#define inf 1000000005

ll k,l,r,t,x,y;
map < ll,ll > mp;

int main()
{
	ios::sync_with_stdio(false);
	cin>>k>>l>>r>>t>>x>>y;
	if(x==y)
	{
		if(k+y<=r||k-y>=l)
			cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
	else if(x>y)
	{
		ll tp=x-y;
		ll cnt=0;
		if(k+y<=r)
			k+=y;
		if(k-x>=l)
		{
			k-=x;
			cnt++;
			cnt=cnt+(k-l)/tp;
		}
		if(cnt>=t)
			cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
	else 
	{
		ll tp=0;
		while(1)
		{
			t-=(k-l)/x;
			k=k-(k-l)/x*x;
			if(t<=0)
			{
				cout<<"Yes"<<endl;
				return 0;
			}
			if(mp[k])
			{
				tp=1;
				cout<<"Yes"<<endl;
				return 0;
			}
			mp[k]=1;
			if(k+y<=r)
				k+=y;
				k-=x;
			t--;
			if(k<l||k>r)
				break;
		}
		cout<<"No"<<endl;
	}
}