import math

n, x, y = map(int, input().split())
r = list(map(int, input().split()))

if n == 1:
    if x == 0 and y == 0:
        print("Yes")
    else:
        print("No")
elif n == 2:
    s = r[0] + r[1]
    d = math.hypot(x, y)
    if abs(d - s) < 1e-9:
        print("Yes")
    else:
        print("No")
else:
    s = 0
    for i in range(n-1):
        s += r[i] + r[i+1]
    d = math.hypot(x, y)
    if d <= s:
        print("Yes")
    else:
        print("No")