# 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

one = N_m % 25
twentyFive = (N_m - one + M_m) % 100
oneThousand = (M_m - twentyFive + L_m) % 1000
ans = (one // 1) + (twentyFive // 25) + (oneThousand // 100)
print(ans)