from math import ceil
time_list = [int(input()) for i in range(5)]
sum_list = []
time_list_0 = []
for i in range(5):
    time_list_0[i] = ceil(time_list[i] / 10) * 10
for j in range(5):
    if time_list[i] == 0:
        sum_list[i] = sum(time_list_0)
    else:
        sum_list[i] = sum(time_list_0) - 10 + time_list[i] % 10
print(min(sum_list))
