[스터디] 알고리즘 - Distinct Subsequences

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Explan

  • Design a code that determines the number of cases in which the string X appears in the string Z.

Example


Input

2				2
babgbag			moonnekky
bag				monkey

rabbbit			abcbbcc
rabbit			abc
  • The first line of the input contains an integer N indicating the number of test cases to follow.
  • The first line of each test case contains a string X, composed entirely of lowercase alphabetic characters and having length no greater than 10,000.
  • The second line contains another string Z having length no greater than 100 and also composed of only lowercase alphabetic characters.
  • Be assured that neither Z nor any prefix or suffix of Z will have more than 10100 distinct occurrences in X as a subsequence.

Output

5				8
3				7
  • For each test case, output the number of distinct occurrences of Z in X as a subsequence.
  • Output for each input set must be on a separate line.

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