a,b,c = list(int(input()) for _ in range(3))

a_num = a // 25
if a_num >= 1:
    b += a_num

b_num =b //4
if b_num >= 1:
    c += b_num

c_num   = c //10
if c_num >= 1:
    d += c_num

d =0
print(d + (a % 25) + (b % 4) + (c % 10) )