text: //2203 - Tempestade de Corvos
  #include <stdio.h>
  #include <stdlib.h>
  #include <math.h>
  #include <string.h>
  #define CAN 1.5
  
  int main(){
      double xF, yF, xI, yI, v, rConju, rCorvo, dist, raio, xPart, yPart;
  
      while (scanf("%lf %lf %lf %lf %lf %lf %lf", &xF, &yF, &xI, &yI, &v, &rConju, &rCorvo)!= EOF){
          raio = rConju + rCorvo;
          xPart = (xI - xF) *(xI - xF);
          yPart = (yI - yF) *(yI - yF);
          dist = sqrt(xPart + yPart);
          dist += (v * CAN); // + deltaS = v * tempo de canalização
  
          if(dist > raio){
              printf("N\n");
          }
          else{
              printf("Y\n");
          }
      }
  
  
      return 0;
  }
  