for (int i = n - 1; i = 0; i--) {
if (n <= 1) return;
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"satisfiable": true,
Think about how you'd search a large room for a lost key. You wouldn't examine every square inch sequentially. You'd split the room into sections (by the couch, near the door, under the table) and rule out entire sections at a glance. "I didn't go near the kitchen, so skip that."
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