Every plan must cost ≤ 6,000 units, launch in ≤ 4 weeks, have a guaranteed response ≤ 2 seconds and export results. Figures are fictional. Among feasible plans, maximise 0.2 × cost rating + 0.3 × performance rating + 0.5 × support rating. Higher ratings are better.

Plan	Cost	Weeks	Response (s)	Export	Ratings: cost / performance / support
R1	3600	3	2.8	yes	5 / 1 / 3
R2	4800	4	1.4	yes	4 / 3 / 2
R3	6000	5	0.8	yes	2 / 5 / 4
R4	4200	4	1.2	no	5 / 4 / 4
R5	5900	4	1.5	yes	2 / 4 / 5

Repair and trace the registration algorithm. Initially there are 6 places. Requests are processed completely one after another. Confirmed requests alone reduce places. A valid team has an integer size from 2 to 4 and consent.

Arrival	Members	Consent
T1	4	yes
T2	2	no
T3	3	yes
T4	2	yes
T5	1	yes
T6	3.5	yes

Use C = CONFIRMED, R = REJECT, W = WAITLIST. Enter six letters in arrival order.