Back to Asgard

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Thor is unhappy that his hammer Mjolnir got destroyed. However, he now travels back in time to Asgard with the help of the time machine which was created by his friends. In Asgard, he is given the following problem to solve. Given four integers $a$ , $b$, $c$, $d$ , check whether they form a rectangle Thor will get back his hammer if he solves it. Can you help him? ###Input: The first line of

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solution.cppC++17

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