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template_ns p1 = pairii(2,3); p2 = pairii(p1); if (p2.first != 2) error("failed"); endif if (p2.second != 3) error("failed"); endif p3 = pairdd(3.5,2.5); p4 = pairdd(p3); if (p4.first != 3.5) error("failed"); endif if (p4.second != 2.5) error("failed"); endif