#include<stdio.h>
int main(void){
    int k,a,b;
    scanf("%d",&k);
    scanf("%d %d",&a,&b);
    int i,x;
    x=1;
    for(i=2;x<a;i++){
        x=k*i;
    }
    if(x>b){
        printf("No\n");
    }else{
        printf("Yes\n");
    }
    return 0;
}