Question 1

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Find the sum of factorial of first N natural numbers. Input - The input contains a single integer N. Output - Output a single number which is the result of the above problem. Constraints - 1 ≤ N ≤ 40 Example 1 Input: 10 Output: 4037913 Example 2 Input: 40 Output: 6349105627901327897 Explanation Example 1. 1! + 2! + 3! + .... 10! = 4037913

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solution.cppC++17

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