#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#define rep(i,k,n) for(int (i)=(k);(i)<(n);(i)++)
#define max(a,b) (a)>(b)?(a):(b)
#define min(a,b) (a)<(b)?(a):(b)
#define abs(a) (a)>0 ?(a):-(a)
#define llong long long

int main(){
	llong A,V; scanf("%lld %lld",&A,&V);
	llong B,W; scanf("%lld %lld",&B,&W);
	llong T; scanf("%lld",&T);
	if( abs(A-B) <= (V-W)*T ){if( abs(A-B)%(V-W)==0 ) printf("YES");}
	else printf("NO");
	return 0;
}
