"He's finding his own way, isn't he? It's not like it's just because of his mum and dad. He's doing his own thing, which is lovely. And he's he seems quite good at it, so it's good to support him."
optimizations is causing correctness or (negative) performance issues
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Фонбет Чемпионат КХЛ
while (this.stack.length && this.arr[this.stack[this.stack.length - 1]] <= cur) {
"userId": "some_user_id",