Description: Problem Description: character sequence is the sequence of a given sequence of characters from arbitrarily (not necessarily consecutive) to remove a number of characters (perhaps a not removed) after the formation of character sequence. So that a given character sequence X = " x0, x1, ..., xm-1" , the sequence Y = " y0, y1, ..., yk-1" is a sequence of X, X, there is a strictly increasing sequence subscript <i0，i1，…，ik-1> So for all j = 0,1, ..., k-1, with xij = yj. For example, X = " ABCBDAB" , Y = " BCDB" is a sequence of X.
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c5.txt
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