# coding:utf-8

L, M, N = [int(input()) for i in range(3)]

L_m = L * 100
M_m = M * 25
N_m = N * 1

a = divmod(N_m, 25)
b = divmod(M_m + a[0] * 25, 100)
c = divmod(L_m + b[0] * 100, 1000)
print(a[1] // 1 + b[1] // 25 + c[1] // 100)