# coding:utf-8
L, M, N = [int(input()) for i in range(3)]

L_m = L * 100 # 100 * 7
M_m = M * 25 # 25 * 20
N_m = N * 1 # 1 * 10

def o_Tw(o):
    a = o // 25
    return a

def tW_oH(q):
    b = (q + L_m) // 100
    return b

def oH_tH(r):
    c = r // 1000
    return c

ansA = o_Tw(N_m)
ansB = tW_oH(M_m)
ansC = oH_tH(L_m)
print(ansA + ansB + ansC)