// Runtime: 0 ms, faster than 100.00% of Java online submissions for Airplane Seat Assignment Probability.
// Memory Usage: 33.2 MB, less than 100.00% of Java online submissions for Airplane Seat Assignment Probability.
class Solution {
    public double nthPersonGetsNthSeat(int n) {
        return n >= 2 ? 0.5: 1.0;
    }
}