L = int(input())
M = int(input())
N = int(input())

to = L * 100 + M * 25 + N

while to > 0:
    if to > 0 and to < 1000:
        to = to
        break
    else :
        to = to - 1000

    
L = to // 100
to = to - (L * 100)
M = to // 25
to = to - (M * 25)
N = to

print(N + M +L)