题解 | #与7无关的数#

def fun(n):
    flag = 0
    if n % 7 == 0:
        return 0
    while n:
        t = n % 10
        n = n / 10
        if t == 7:
            return 0
    return 1

def shu(n):
    arr = []
    for i in range(1, n+1):
        if fun(i):
            arr.append(i**2)
    return sum(arr)





while True:
    try:
        n = int(input())
        print(shu(n))
    except:
        break