#python L12 和为K的连续子列表
n = int(input())
k = int(input())
s = input()
a = s.split(' ')
b = False
lis = [int(i) for i in a] #转换成整数格式的列表
for i in range(n):
    for j in range(n):
        sums = 0
        for l in range(i, j+1):
            sums += lis[l]
        if sums == k:
            b = True
            break
if b == False:
    print('no')
else:
    print('yes')