q = []
z = 0
for i in range(10):
    w = int(input())
    q.append(w)
    z += w
x = z // 10
z = 0
for i in range(10):
    while q[i] < x:
        p = max(q[0], q[1], q[2], q[3], q[4], q[5], q[6], q[7], q[8], q[9])
        q[i] += x - q[i]
        p -= x - q[i]
    z += 1
print(z)