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在本题中，你的程序会在共 $2 \cdot n_{Instance}$ 个进程中同时运行，每个进程处理独立的 $T$ 组测试数据。具体的，对于每个 $1 \leq i \leq n_{Instance}$，第 $2i-1$ 个进程将处理 $T$ 组编码任务，第 $2i$ 个进程将处理 $T$ 组解码任务。注意进程间与进程内编码与解码的调用顺序是任意的。
每个进程中，你所消耗的时间不能超过 $0.005 \cdot T$ 秒，空间不能超过 8 MiB。
视测试点不同，$1 \leq n_{Instance} \leq 4$，$50 \leq T \leq 999$。
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