{"trustable":true,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cdiv class\u003d\"problem_par\"\u003e\u003cdiv class\u003d\"problem_par_normal\"\u003eSoon after the peace on Naboo planet had been restored, a gungan Dao-Dao decided to go hunting. However, he found a strange metal container with an emblem of the Trade Federation on it. Dao-Dao regarded it as trash and threw it into the forest.\r\nBut the very next moment poor gungan was attacked by the whistling hive of droid flies\u0026nbsp;— the modern weapon constructed by the Federation. He had to immediately alarm all gungans! But Dao-Dao decided to defeat the flies himself and create an indestructible power field around them. For the maximal stability the power field created by Dao-Dao must have a cubic shape, moreover, there must be at least one droid fly on each of the faces of the field. Help gungan to position this power field in space.\u003c/div\u003e\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cdiv class\u003d\"problem_par\"\u003e\u003cdiv class\u003d\"problem_par_normal\"\u003eThe first line contains an integer \u003ci\u003eN\u003c/i\u003e \u003cnobr\u003e(2 ≤ \u003ci\u003eN\u003c/i\u003e ≤ 100)\u003c/nobr\u003e\u0026nbsp;— the number of droid flies. The following \u003ci\u003eN\u003c/i\u003e lines contain the coordinates of the flies \u003ci\u003eX\u003csub\u003ei\u003c/sub\u003e\u003c/i\u003e, \u003ci\u003eY\u003csub\u003ei\u003c/sub\u003e\u003c/i\u003e, \u003ci\u003eZ\u003csub\u003ei\u003c/sub\u003e\u003c/i\u003e— integers with absolute values not exceeding 100. No two flies are located at the same point.\u003c/div\u003e\u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cdiv class\u003d\"problem_par\"\u003e\u003cdiv class\u003d\"problem_par_normal\"\u003eOutput the coordinates of three normalized vectors collinear to the edges of the required cube. Output the answer as precisely as possible. You can assume that the required power field always exists.\u003c/div\u003e\u003c/div\u003e"}},{"title":"Sample","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\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\u003e6\r\n0 1 1\r\n1 0 1\r\n1 1 0\r\n1 1 2\r\n1 2 1\r\n2 1 1\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e1 0 0\r\n0 1 0\r\n0 0 1\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\u003cbr\u003e\u003ctable class\u003d\u0027vjudge_sample\u0027\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\u003e2\r\n1 0 0\r\n-1 0 0\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e0.577350269 0.211324865 -0.788675135\r\n0.577350269 0.577350269 0.577350269\r\n0.577350269 -0.788675135 0.211324865\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}