He writes them in decimal notation without leading zeros in a row, obtaning a string s.Given the string s, find the number of possible array of integers
Bobo has n distinct integers a_1, a_2, dots, a_n a 1 ,a 2 ,…,a n in [0, 99]. He writes them in decimal notation without leading zeros in a row, obtaning a string s. Given the string s, find the number of possible array of integers a_1, a_2, dots, a_n a 1 ,a 2 ,…,a n .
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