#include <stdio.h>

void main(void){
    int a = 0 , b = 0 , c = 0;
    scanf("%d %d %d",&a,&b,&c);
    int time = a/c;
    if(time < 0){
        time *= -1;
    }
    if(time <= b){
    	printf("Yes");
    }else{
    	printf("No");
    }
}