num = []
for i in range(5):
    num.append(int(input()))

best_min = 10
for idx, i in enumerate(num):
    if i % 10 < best_min:
        best_min = i % 10
        index = idx
count = 0
for idx, i in enumerate(num):
    if idx == index:
        count += i
    else:
        count += i + 10 - (i%10) 
print(count)