import math

l = int(input().strip())
m = int(input().strip())
n = int(input().strip())

def conv25(n):
    return [math.floor(n / 25), n % 25]

def conv4(m):
    return [math.floor(m / 4), m % 4]

def conv10(l):
    return l % 10

m_diff, n = conv25(n)
m += m_diff
l_diff, m = conv4(m)
l += l_diff
l = conv10(l)

print(l + m + n)