# -*- coding: utf-8 -*- 
from __future__ import absolute_import
from __future__ import unicode_literals
L = input()
M = input()
N = input()
c = 0

if L / 25 > 0:
    M += L / 25
    c += L % 25
else:
    c += L

if M / 4 > 0:
    N += M / 4
    c += M % 4
else:
    c += M

if N / 10 > 0:
    c += N % 10
print c