Have seen people writing this at the beginning of C++ submissions to improve running times:\n\n```\n ios_base::sync_with_stdio(0);\n cin.tie(nullptr);\n```\n\nI think it makes no sense to include random optimisations just to get in the top 95-100% of submissions. Algorithmic efficiency is what matters here. It looks immature and hope people stop doing that.

Have seen people writing this at the beginning of C++ submissions to improve running times:\n\n\n ios_base::sync_with_stdio(0);\n cin.tie(nullptr);\n\n\nI think