#include <cstdio>#include <cmath>const double eps=1e-9;double h1,h2,d1,d2,a,b;bool check(double x0){double y;if(x0<d1){double y0=h1-a*x0*x0;y=y0-b*(d1-x0)*(d1-x0);}else if(x0-eps>d2) return false;else y=h1-a*d1*d1;return y+eps>=h2;}int main(){while(scanf("%lf %lf %lf %lf %lf %lf",&h1,&h2,&d1,&d2,&a,&b)==6){double A=a+b;double B=-2.*b*d2;double C=b*d2*d2-h1;double det=B*B-4*A*C;bool ans=false;if(det+eps>=0){det=sqrt(fabs(det));double x1=(-B-det)/(2*A);double x2=(-B+det)/(2*A);if(x1+eps>=0.) ans=ans||check(x1);if(x2+eps>=0.) ans=ans||check(x2);}puts(ans?"Yes":"No");}return 0;}
