{"trustable":true,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cspan lang\u003d\"en-us\"\u003e\u003cp\u003eliympanda, one of Ikki’s friend, likes playing games with Ikki. Today after minesweeping with Ikki and winning so many times, he is tired of such easy games and wants to play another game with Ikki.\u003c/p\u003e\u003cp\u003eliympanda has a magic circle and he puts it on a plane, there are \u003ci\u003en\u003c/i\u003e points on its boundary in circular border: 0, 1, 2, …, \u003ci\u003en\u003c/i\u003e − 1. Evil panda claims that he is connecting m pairs of points. To connect two points, liympanda either places the link entirely inside the circle or entirely outside the circle. Now liympanda tells Ikki no two links touch inside/outside the circle, except on the boundary. He wants Ikki to figure out whether this is possible…\u003c/p\u003e\u003cp\u003eDespaired at the minesweeping game just played, Ikki is totally at a loss, so he decides to write a program to help him.\u003c/p\u003e\u003c/span\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cspan lang\u003d\"en-us\"\u003e\u003cp\u003eThe input contains exactly one test case.\u003c/p\u003e\u003cp\u003eIn the test case there will be a line consisting of of two integers: \u003ci\u003en\u003c/i\u003e and \u003ci\u003em\u003c/i\u003e (\u003ci\u003en\u003c/i\u003e ≤ 1,000, \u003ci\u003em\u003c/i\u003e ≤ 500). The following \u003ci\u003em\u003c/i\u003e lines each contain two integers \u003ci\u003ea\u003csub\u003ei\u003c/sub\u003e\u003c/i\u003e and \u003ci\u003eb\u003csub\u003ei\u003c/sub\u003e\u003c/i\u003e, which denote the endpoints of the \u003ci\u003ei\u003c/i\u003eth wire. Every point will have at most one link.\u003c/p\u003e\u003c/span\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cspan lang\u003d\"en-us\"\u003e\u003cp\u003eOutput a line, either “\u003ccode\u003epanda is telling the truth...\u003c/code\u003e” or “\u003ccode\u003ethe evil panda is lying again\u003c/code\u003e”.\u003c/p\u003e\u003c/span\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\u003e4 2\r\n0 1\r\n3 2\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003epanda is telling the truth...\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}