#include<stdio.h>
#include<stdlib.h>
int main(void){
  	int a,b,c,d,e;
  	int f,g;
  scanf("%d%d\n",&a,&b);
  scanf("%d%d\n",&c,&d);
  scanf("%d\n",&e);
  f = abs(a - c);
  g = abs(b - d);
  if(f = g * e || b < d){
		printf("NO");
  }else{
    	printf("YES");
  }
}
  
