import math

a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
sub = miin(m % 10 for m in [a,b,c,d,e] if m % 10 != 0)
time = 10 * (ceil(a / 10) + ceil(b / 10)+ ceil(c / 10)+ ceil(d / 10)+ ceil(e / 10)) - (10 - sub)
print(int(time))

