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

a.sort()
zero_count = 0
max_count = 0
now = 0
now_count = 0
for x in a:
    if x == 0: zero_count += 1
    else:
        if now != x:
            now = x
            max_count = max(max_count, now_count)
            now_count = 1
        elif now == x:
            now_count += 1
max_count = max(max_count, now_count)

if zero_count + max_count >= k: print("Yes")
else: print("No")