""" doc """
if __name__ == "__main__":
    t = int(input())
    sr = 0
    a = []
    while t != 0:
        a.append(t)
        sr += t
        t = int(input())
    srar = sr / len(a)
    c = 0
    for i in range(len(a)):
        if a[i] > srar:
            c += 1
    print(c)
    for i in range(len(a)):
        if a[i] > srar:
            print(a[i], end=' ')