Pro.ID22313 TitleThe Twin Tower Title链接http://10.20.2.8/oj/exercise/problem?problem_id=22313 AC2 Submit2 Ratio100.00% 时间&空间限制描述In recent years so many twins enrolled at Leiden University, that housing them has become a big problem. In an effort to accomodate everyone, the university has made plans to build a skyscraper of N floors high, with 9 rooms on each floor, laid out in a 3×3 square. According to these plans, everyone should be able to get a room next to or directly above or below their twin brother or sister. To be even more precise: the two rooms of a twin should either be at opposite sides of a common wall, or the floor of one room should be the ceiling of the other. For the sake of privacy, students never share a room. Today the university has tasked some poor soul (you!) to count all possible pairings of rooms that leave no room unpaired, modulo 10,007. 输入The first line of the input contains a single number: the number of test cases to follow. Each test case has the following format: One line with an integer N, satisfying 0 ≤ N ≤ 5,000. 输出Description In recent years so many twins enrolled at Leiden University, that housing them has become a big problem. In an effort to accomodate everyone, the university has made plans to build a skyscraper of N floors high, with 9 rooms on each floor, laid out in a 3×3 square. According to these plans, everyone should be able to get a room next to or directly above or below their twin brother or sister. To be even more precise: the two rooms of a twin should either be at opposite sides of a common wall, or the floor of one room should be the ceiling of the other. For the sake of privacy, students never share a room. Today the university has tasked some poor soul (you!) to count all possible pairings of rooms that leave no room unpaired, modulo 10,007. Input The first line of the input contains a single number: the number of test cases to follow. Each test case has the following format: One line with an integer N, satisfying 0 ≤ N ≤ 5,000. Output For every test case in the input, the output should contain a single number, on a single line: the number of possible configurations modulo 10007. Sample Input 4 Sample Output 229 Source 样例输入4 样例输出229 作者 |