B"You have n stacks r_1,r_2, ldots,r_n . Each stack contains some positive integers ranging from 1 to n . Define the following functions: You want to know the values returned by texttt{init(1)}, texttt{init(2)}, ldots, texttt{init(n)} . Note that, during these calls, the stacks r_1,r_2, ldots,r_n don't change, so the calls texttt{init(1)}, texttt{init(2)}, ldots, texttt{init(n)} are independent. The first line of the input contains one integer n ( 1 <= n <= 10^5 ) -- the length of the array r . Each of the following n lines contains several integers. The first integer k_i ( 0 <= k_i <= 10^5 ) represents the number of elements in the i -th stack, and the following k_i positive integers c_{i,1},c_{i,2}, ldots,c_{i,k_i} ( 1 <= c_{i,j} <= n ) represent the elements in the i -th stack. c_{i,1} is the bottom element. In each test, sum k_i <= 10^6 . You need to output n values, the i -th of which is the value returned by texttt{init(i)} . In the first example: "...