{"problem":{"name":"pushpush","description":{"content":"You are given an integer sequence of length $n$, $a_1, ..., a_n$. Let us consider performing the following $n$ operations on an empty sequence $b$. The $i$\\-th operation is as follows: 1.  Append $a_","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"arc077_a"},"statements":[{"statement_type":"Markdown","content":"You are given an integer sequence of length $n$, $a_1, ..., a_n$. Let us consider performing the following $n$ operations on an empty sequence $b$.\nThe $i$\\-th operation is as follows:\n\n1.  Append $a_i$ to the end of $b$.\n2.  Reverse the order of the elements in $b$.\n\nFind the sequence $b$ obtained after these $n$ operations.\n\n## Constraints\n\n*   $1 \\leq n \\leq 2\\times 10^5$\n*   $0 \\leq a_i \\leq 10^9$\n*   $n$ and $a_i$ are integers.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$n$\n$a_1$ $a_2$ $...$ $a_n$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"arc077_a","tags":[],"sample_group":[["4\n1 2 3 4","4 2 1 3\n\n*   After step 1 of the first operation, $b$ becomes: $1$.\n*   After step 2 of the first operation, $b$ becomes: $1$.\n*   After step 1 of the second operation, $b$ becomes: $1, 2$.\n*   After step 2 of the second operation, $b$ becomes: $2, 1$.\n*   After step 1 of the third operation, $b$ becomes: $2, 1, 3$.\n*   After step 2 of the third operation, $b$ becomes: $3, 1, 2$.\n*   After step 1 of the fourth operation, $b$ becomes: $3, 1, 2, 4$.\n*   After step 2 of the fourth operation, $b$ becomes: $4, 2, 1, 3$.\n\nThus, the answer is `4 2 1 3`."],["3\n1 2 3","3 1 2\n\nAs shown above in Sample Output 1, $b$ becomes $3, 1, 2$ after step 2 of the third operation. Thus, the answer is `3 1 2`."],["1\n1000000000","1000000000"],["6\n0 6 7 6 7 0","0 6 6 0 7 7"]],"created_at":"2026-03-03 11:01:14"}}