AT_abc462_b [ABC462B] Gift

$ N $ people, numbered $ 1 $ through $ N $ , exchanged gifts with each other. Person $ i $ sent gifts to $ K_i $ people: persons $ A_{i,1}, A_{i,2}, \ldots, A_{i,K_i} $ . For each $ i = 1, 2, \ldots, N $ , find all people who sent a gift to person $ i $ .

The input is given from Standard Input in the following format: > $ N $ $ K_1 $ $ A_{1,1} $ $ A_{1,2} $ $ \ldots $ $ A_{1,K_1} $ $ K_2 $ $ A_{2,1} $ $ A_{2,2} $ $ \ldots $ $ A_{2,K_2} $ $ \vdots $ $ K_N $ $ A_{N,1} $ $ A_{N,2} $ $ \ldots $ $ A_{N,K_N} $

Output $ N $ lines. For the $ i $ -th line, let $ B_1, B_2, \ldots, B_X $ be the numbers of the people who sent a gift to person $ i $ , listed in ascending order (where $ X $ is the count of people who sent a gift to person $ i $ ), and output in the following format: > $ X $ $ B_1 $ $ B_2 $ $ \ldots $ $ B_X $

### Sample Explanation 1 Person $ 1 $ sent a gift to person $ 2 $ , person $ 2 $ sent a gift to person $ 3 $ , person $ 3 $ sent a gift to person $ 2 $ , and person $ 4 $ sent gifts to persons $ 1, 2, 3 $ . Person $ 1 $ received a gift from person $ 4 $ . Thus, output `1 4` on the first line. Person $ 2 $ received gifts from persons $ 1, 3, 4 $ . Thus, output `3 1 3 4` on the second line. Person $ 3 $ received gifts from persons $ 2, 4 $ . Thus, output `2 2 4` on the third line. Person $ 4 $ did not receive any gifts. Thus, output `0` on the fourth line. ### Constraints - $ 2\le N\le 100 $ - $ 1\le K_i\le N-1 $ - $ 1\le A_{i,1} < A_{i,2} < \cdots < A_{i,K_i}\le N $ - $ A_{i,j} \neq i $ - All input values are integers.