List= [int(input()) for i in range(5)]
amari =9
time = 0
flag = False;
for i in List:
    if(i%10 != 0):
        time += 10 - i%10
        amari = min(amari,i%10)
        flag = True
output = sum(List) + time
if(flag = True):
    output += amari
print(output)