import sys
import math
stdin = sys.stdin
mod = 10**9 + 7

ns = lambda: stdin.readline().rstrip()
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
sa = lambda h: [list(map(int, stdin.readline().split())) for i in range(h)]

l = 9
ans = 0
for _ in range(5):
    num = ni()
    ans += -(-num//10) * 10
    if num % 10 != 0 and l > num % 10:
        l = num % 10
ans += - 10 + l
print(ans)