хуйня.py

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

flag = False
k = 1
i = 0
while i < n and not flag:
    summ1 = 0
    summ2 = 0
    k = 1
    j = i
    while j >= 0 and not flag:
        summ1 += a[j] * k
        summ2 += a[j] * k * -1
        flag = True if summ1 == x and k == 1 or summ2 == x and k == -1 else flag
        k *= -1
        j -= 1
    i += 1

print("YES" if flag else "NO")