import math

arr = [int(input()) for _ in range(5)]

br = 0
for r in range(1, 10):
    for i in range(5):
        if((arr[i] % 10) == r):
            last = i
            br = 1
            break
        pass
    if(br == 1):
        break
    pass

time = 0
for i in range(5):
    time += math.ceil(arr[i]/10) * 10

time += arr[last] - math.ceil(arr[last]/10) * 10

print(time)
