Number of numbers

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Given a range of numbers (BOTH INCLUSIVE), print the number of numbers, sum of whose digits is a prime number. Note: 1 is NOT considered to be a prime number. Input First line contains the number of test cases T. Each test case consists of two lines, each line containing one integer. First integer L gives the beginning of the range of values and the second integer U gives the end of range. Ou

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solution.cppC++17

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