nlist = [int(input()) for i in range(5)]
#print(nlist)
total_time=0
tail=[]
for number in nlist:
    if number % 10 == 0:
        total_time += number
    else:
        total_time += (number+10-(number%10))
        tail.append(number%10)

total_time -= (10-min(tail))
print(total_time)
