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


int main(void){

long int a,b,v,w,t;

scanf("%ld %ld %ld %ld %ld",&a,&v,&b,&w,&t);

long int kyori,run;

kyori=labs(b-a);
//run=abs(v*t-w*t);
int flag=0;

for(long int i=0;i<=t;i++){
        if(v*i-w*i == kyori){
                flag=1;
                printf("YES\n");
                break;
        }   
}

if(flag==0){
        printf("NO\n");
}


return 0;
}