s_initial= []
for i in range(3):
    s_initial.append(int(input()))
L = int(s_initial[0]) #100円の枚数
M = int(s_initial[1]) #25円の枚数
N = int(s_initial[2]) #1円の枚数
if N >= 25:
    M = M + N // 25
    N = N % 25

if M >= 4:
    L = L + M // 4
    M = M % 4

if L >= 10:
    L = L % 10

print(L + M + N)