Chocolate Pairs

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One day Vishesh went to a fair where he enjoyed a lot, and while returning home he had $K$ rupees left with him. He went to a chocolate shop where he wanted to buy a pair of chocolates such that sum of prices of both the chocolates amounts to $K$ rupees.There are $N$ chocolates available in the shop and the $i$th chocolate has a price $Ci$. Help Vishesh to find the number of pairs with sum equal t

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solution.cppC++17

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