times = [int(input()) for i in range(5)]
cost = 0
p_times = [time % 10 for time in times]
if sum(p_times) == 0 and min(p_times) > 0:
    last_order = False
else:
    last_order = min([i for i in p_times if i > 0])
    last_order_idx = p_times.index(last_order)

if last_order:
    cost = times.pop(last_order_idx)

for time in times:
    if time % 10 == 0:
        cost += time
    else:
        cost += time + (10 - time % 10)

print(cost)
