import math
N100 = input()
N25 = input()
N1 = input()
N100 = int(N100)
N25 = int(N25)
n1 = 0
n25 = 0
n100 = 0
if int(N1) / 25 >= 1:
    N25 += math.floor(int(N1) / 25)
    n1 += int(N1) % 25
else:
    n1 = N1
if int(N25) / 4 >= 1:
    N100 += math.floor(int(N25) / 4)
    n25 += int(N25) % 4
else:
    n25 += N25
if int(N100) >= 10:
    n100 += int(N100) % 10
else:
    n100 += int(N100)
answer = int(n1) + int(n25) + int(n100)
print(answer)