try:
    import mydebug

    def dprint(*objects):
        print(*objects)
except:
    def dprint(*objects, sep='', end='\n'): pass

# d, p = [int(x) for x in input().split()]
l = int(input())
m = int(input())
n = int(input())
dprint("l:%d m:%d n:%d" % (l, m, n))

ans = 0

total = l * 100 + m * 25 + 1 * n
dprint("total",total)

total %= 1000

left = total
ans = 0
ans += left // 100
left = left % 100
dprint("left",left, "ans", ans)
ans += left // 25
left = left % 25
ans += left
dprint("left",left, "ans", ans)

print(ans)