#include <stdio.h>
int main(){
  long int a,v,b,w,t,i,flag=0;
  scanf("%ld %ld",&a,&v);
  scanf("%ld %ld",&b,&w);
  scanf("%ld",&t);
  long int x=a;
  long int y=b;
  for(i=1;i<=t;i++){
    x=x+v;
    y=y+w;
    if(x==y){
      break;
    }
  }
  if(x==y)printf("Yes");
  else printf("No");
  return 0;
}
