{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cp\u003e给你12个实数,计算一下它们的平均数!\u003c/p\u003e\n\u003cp\u003e\u003c/p\u003e\n\u003cp\u003e是不是简单的不敢相信。\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"一共12行每行一个实数。"}},{"title":"Output","value":{"format":"HTML","content":"输出平均数。"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e\n100.00\n489.12\n12454.12\n1234.10\n823.05\n109.20\n5.27\n1542.25\n839.18\n83.99\n1295.01\n1.75\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e\n$1581.42\u003c/pre\u003e"}}]}