{"trustable":false,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003edd \u003e pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background-color: #f5f5f5;\n border: 1px solid #ccc;\n border-radius: 4px;\n}\u003c/style\u003e","sections":[{"title":"Description","value":{"format":"MD","content":"给你$N$堆石头,两个人玩游戏.\n每次任选$1$个非空堆\n- 1、首先拿掉至少$1$个石头,\n- 2、移动这堆任意个($0$个也可以)石子到非空堆中。\n\n谁不能移动石子了,谁就输了。\n"}},{"title":"Input","value":{"format":"MD","content":"一个整数$N(0\u003cN\u003c\u003d10^5)$,后面接$N$个整数$a_i(0\u003c\u003da_i\u003c\u003d2^{31}-1)$代表每堆的石头数量。\n\n"}},{"title":"Output","value":{"format":"MD","content":"For each line of input, output \"first player\" if first player can force a win, or \"second player\", if the second player can force a win. \n\n"}},{"title":"Sample","value":{"format":"MD","content":"\u003ctable class\u003d\"vjudge_sample\"\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e3 2 1 3\n\n\n\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003efirst player\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}