#include<bits/stdc++.h> 
using namespace std; 
#define ll long long
int main() {
	ll k,l,r,t,x,y;
	cin>>k>>l>>r>>t>>x>>y;
	if(k<l || k>r) {
	    cout<<"No"<<endl; return 0;
	}
	if(x>y) {
	    if(k+y>r) k-=x; t--;
	    if(k<l) return cout<<"No"<<endl,0;
	    if((k-l)/(x-y) < t ) {
	        cout<<"No"<<endl; return 0;
	    }
	    cout<<"Yes"<<endl; return 0;
	}
	else {
	    vector<bool> was(x,false);
	    while(t>0) {
	        if(was[k%x]) return cout<<"Yes"<<endl,0;
	        was[k%x]=true;
	        ll remd=min(t,(k-l)/x);
	        k-=remd*x;
	        t-=remd;
	        if(t==0) return cout<<"Yes"<<endl,0;
	        t--;
	        if(k+y<=r) k+=y;
	        k=k-x;
	        if(k<l || k>r) return cout<<"No"<<endl,0;
	    }
	    cout<<"Yes"<<endl;
	}
	return 0;
}
