给定N*N字母矩阵，从任意点出发，上，下，左，右移动，在规定方向连续匹配给定的单词序列。即称为命中，否则不命中，字符矩阵中的字母仅能使用一次，不能在同一单元格停留两次。字符矩阵最大50*50，都为大写字母。输入1为字母矩阵，输入2为字母序列，输出是否匹配。-Given the letter N* N matrix, starting from any point, up, down, left, right, match the prescribed direction of the continuous sequence of a given word. That is called the hit, or do not hit, the character matrix of letters can only be used once, can not stay in the same cell twice. Maximum characters 50* 50 matrix, are all capital letters. Input 1 is the letter matrix, enter the 2 letter sequence, the output match.