I don't know whether Indonesian math olympiad people has manifold or not, but here it goes:

Each person will resolve YES/NO on whether or not they will qualify for Indonesia's IMO 2026 team. If a person qualifies but cannot participate due to visa issues, IMO 2026 cancelled, etc, it will still resolve YES.

If a historically unprecedented event happens where a person qualifies but declines, that person will resolve NO, and the person who takes the spot will resolve YES.

Danica Odelia, as a IMO 2025 contestant, will have her score cut by 5%

Past IMO veteran scores usually get cut, by 5%-15%. Historical veteran discounts (only ones I have data):
TST 2026: Veteran scores got a 5% cut

TST 2025: Veteran scores got a 8% cut

TST 2024: Veteran scores got a 7% cut

TST 2023: Veteran scores got a 10% cut

TST 2018: Veteran scores got a 10% cut

(Example: if you got a score of 79 and got a 8% cut, your final score would be 79 × 0.92 = 72.68)

The only IMO veteran is HM IMO 2025 Danica Odelia, the rest have not yet made IMO.