dish_time = [int(input()) for i in range(5)]
rest=[0,0,0,0,0]
last_min=[]

for j in range(5):
    rest[j] = dish_time[j] - (dish_time[j]//10*10)
    if rest[j] != 0:
        dish_time[j] = (dish_time[j]//10 + 1 ) *10   
        last_min.append(rest[j])

sum_time =  0

for i in range(5):
    sum_time = sum_time + dish_time[i]

sum_time = sum_time + min(last_min) - 10
    
print(sum_time)