N, S = map(int, input().split())
A = sorted(list(map(int, input().split())))

def check(X):
	i, T = 0, 1
	while i < N:
		if A[i] <= X:
			i += 1
			continue
		i = min(N, i + X)
		T += A[i - 1]
	return T <= S
	
ng, ok = 0, 10 ** 10
while ok - ng > 1:
	mid = (ok + ng) // 2
	if check(mid):
		ok = mid
	else:
		ng = mid
print(ok)