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(51/2)^2+16(51/2)+(51/2)^2-20(51/2)+164=(51/2)^2-16(51/2)+(51/2)^2+14(51/2)+113
(51/2)^2+16(51/2)+(51/2)^2-20(51/2)+164=(51/2)^2-16(51/2)+(51/2)^2+14(51/2)+113
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