Quadruples

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Consider a numeric string str where stri denotes the digit(0 to 9) at index i. We call (x1, x2, x3, x4) quadruple a palindromic quadruple of string S if it satisfies the following criteria : Sx1 = Sx4 and Sx2 = Sx3 where x1 . You are given Q queries where each query is of form : - 1 i j : Print number of different palindromic quadruples (x1, x2, x3, x4) for string str such that i ≤ x1 . As the r

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solution.cppC++17

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