B"Let's define S(x) to be the sum of digits of number x written in decimal system. For example, S(5) = 5 , S(10) = 1 , S(322) = 7 . We will call an integer x interesting if S(x + 1) < S(x) . In each test you will be given one integer n . Your task is to calculate the number of integers x such that 1 <= x <= n and x is interesting. The first line contains one integer t ( 1 <= t <= 1000 ) -- number of test cases. Then t lines follow, the i -th line contains one integer n ( 1 <= n <= 10^9 ) for the i -th test case. Print t integers, the i -th should be the answer for the i -th test case. The first interesting number is equal to 9 . "...