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Farmer Jan

Farmer Jan has three fields with Tomatoes planted in them. He harvested x tomatoes from the first field, y tomatoes from the second field and is yet to harvest tomatoes from the third field. Feb is very superstitious and believes that if the sum of tomatoes he harvests from the three fields is a prime number (http://en.wikipedia.org/wiki/Prime_number), he'll make a huge profit. Please help him by

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solution.cppC++17

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