{"trustable":true,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cp\u003eA non-negative integer is \u003cstrong\u003eK\u003c/strong\u003e-digit, if it can be written using \u003cstrong\u003eK\u003c/strong\u003e digits, but (\u003cstrong\u003eK-1\u003c/strong\u003e) digits are not enough for this. For example, \u003cstrong\u003e43\u003c/strong\u003e is a two-digit number, \u003cstrong\u003e2010\u003c/strong\u003e is four-digit, and \u003cstrong\u003e0\u003c/strong\u003e and \u003cstrong\u003e5\u003c/strong\u003e are one-digit numbers.\u003c/p\u003e\n\n\u003cp\u003eFor given \u003cstrong\u003eA\u003c/strong\u003e and \u003cstrong\u003eB\u003c/strong\u003e count, how many \u003cstrong\u003eK\u003c/strong\u003e-digit non-negative integers exist, where \u003cstrong\u003eK\u003c/strong\u003e is not less than \u003cstrong\u003eA\u003c/strong\u003e and not greater than \u003cstrong\u003eB\u003c/strong\u003e.\u003c/p\u003e\n\n\u003cp\u003e\u003ch2\u003eInput\u003c/h2\u003e\u003c/p\u003e\n\n\u003cp\u003eThe only line contains integers \u003cstrong\u003eA\u003c/strong\u003e and \u003cstrong\u003eB\u003c/strong\u003e. \u003cstrong\u003e1\u003c/strong\u003e ≤ \u003cstrong\u003eA\u003c/strong\u003e ≤ \u003cstrong\u003eB\u003c/strong\u003e ≤ \u003cstrong\u003e1000\u003c/strong\u003e.\u003c/p\u003e\n\n\u003cp\u003e\u003ch2\u003eOutput\u003c/h2\u003e\u003c/p\u003e\n\n\u003cp\u003eOutput the answer to the problem without excessive leading zeros.\u003c/p\u003e\n\n"}},{"title":"Example","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\u003e1 1\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e10\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}