#include<iostream> #include<cstring> using namespace std; int main(){ int n1; cin>>n1; for(int i=0;i<n1;i++){ int n,max,min,ave; scanf("%d%d%d%d",&n,&max,&min,&ave); int sum=n*ave; int ma=max*(n-1)+min,mi=min*(n-1)+max;/ if(sum<=ma&&sum>=mi&&max>=ave&&ave>=min) cout<<"yes"<<endl; else cout<<"no"; } }