Deleting digits

def del_digits(n):
    count = 0
    while n > 0:
        max_digit = 0
        temp = n
        while temp > 0:
            digit = temp % 10
            if digit > max_digit:
                max_digit = digit
            temp //= 10
        n -= max_digit
        count += 1
    return count



if __name__ == "__main__":
    n = int(input())
    print(del_digits(n))

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED