import sys
import os
import math
import bisect
import collections
import itertools
import heapq

ii = lambda: int(sys.stdin.buffer.readline().rstrip())
il = lambda: list(map(int, sys.stdin.buffer.readline().split()))
fl = lambda: list(map(float, sys.stdin.buffer.readline().split()))
iln = lambda n: [int(sys.stdin.buffer.readline().rstrip()) for _ in range(n)]

iss = lambda: sys.stdin.buffer.readline().decode().rstrip()
sl = lambda: list(map(str, sys.stdin.buffer.readline().decode().split()))
isn = lambda n: [sys.stdin.buffer.readline().decode().rstrip() for _ in range(n)]

lcm = lambda x, y: x * y / math.gcd(x, y)

MOD = 10 ** 9 + 7
MAX = float('inf')


def f(N):
    return (round(N // 10)+1) * 10


def main():
    if os.getenv("LOCAL"):
        sys.stdin = open("input.txt", "r")

    ABCDE = itertools.permutations([ii() for _ in range(5)])

    ret = MAX
    for a, b, c, d, e in ABCDE:
        ret = min(ret, f(a) + f(b) + f(c) + f(d) + e)
    print(ret)


if __name__ == '__main__':
    main()
