l,m,n = [int(input()) for _ in range(3)]
c = 0
sum = l + 25*m + 100*n
if sum == 0:
    print('貯金箱は空っぽでした。')
else:
    while(sum>1000):
        c += 1
        sum -= 1000

    while(sum>100):
        c += 1
        sum -= 100
    while(sum>25):
        c += 1
        sum -= 25
    print(c+sum - 1)