Bessie wants to buy some toys. She has saved her allowance for years and has a huge stash of cash, but she is frugal and wants the best value for her money. She has decided to buy exactly three different toys out of the $N$ ($3 \le N \le 25{,}000$) toys on offer.
Toy $i$ gives Bessie $J_i$ ($0 \le J_i \le 1{,}000{,}000$) microbundles of joy and costs $P_i$ ($0 < P_i \le 100{,}000{,}000$). Bessie has enough money to buy any three toys she likes.
Bessie wants to maximize the total of her happy-frugal metric — defined as $J_i / P_i$ (joy divided by price) — over the three toys she picks. Help her decide which toys to buy. The answer is guaranteed to be unique.
For example, suppose six toys are on offer, with the following happy-frugal metrics:
i Joy Price Happy-Frugal Metric
- --- ----- -------------------
1 0 521 0.00000
2 442 210 2.10476...
3 119 100 1.19000
4 120 108 1.11111...
5 619 744 0.83198...
6 48 10 4.80000
Bessie would choose toy 6 (metric 4.80), toy 2 (metric 2.10), and toy 3 (metric 1.19).