L = int(input("Lの値を入力"))
N = int(input("Nの値を入力"))

print("N個の整数を入力")
A =  [int(input("N個の整数")) for i in range(N)]

sum = 0
cnt = 0
A.sort()

for i in range(N):
    if sum + A[i] <= L:
        sum += A[i]
        cnt += 1

print(cnt)