stack.pop(); // 弹出无效候选值
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The Test PLA evaluates all 148 product terms against this input and produces an 18-bit output:
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Google Messages already has a location-sharing feature, but it's more for dropping a static pin on a map. That's fine if you're staying in the same spot, but not much use if you're on the go. The difference here is that the new option updates your location as you move, making it much easier to connect with someone.