import sys
input=sys.stdin.readline
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))

def main():
    mod=10**9+7
    N,K,T=MI()
    N=abs(N)
    
    if K*T >= N:
        print("Yes")
    else:
        print("No")
        
    


main()