Establish Constraints

Floor indices: 6, 5, 4, 3, 2, 1. H lives immediately above Y (HY block). Two people between P and Y. P is on an odd floor (1, 3, 5). S is immediately below G (GS block).

Test P on Floor 5

If P=5, then Y must be 2 (two people, 4 and 3, between 5 and 2). Since HY block must be together, H=3, Y=2. Remaining floors are 6, 4, 1. Placing GS block requires consecutive slots; the only available consecutive slots are 4 and 3 or 3 and 2, but those are taken. Wait, if P=5, Y=2, H=3, then 6, 4, 1 are left. G and S must be consecutive, so G=4, S=3... no, H is 3. Correct: G=4, S=3? No, H=3. Let's re-verify: P=5, Y=2, H=3. Floors 6, 4, 1 left. G and S must be together. 6 and 4 are not adjacent. Let's try P=1: Y=4, H=5. G, S must be adjacent. Remaining: 6, 3, 2. G=3, S=2. Then A=6. This works: 6-A, 5-H, 4-Y, 3-G, 2-S, 1-P. Wait, re-reading: P lives on odd. If P=5, Y=2, H=3, G=6, S=5 (conflict). If P=3, Y=6 (too high). If P=5, Y=2, H=3, G=4, S=?, no. Let's re-map: A=6, P=5, G=4, S=3, H=2, Y=1. P is odd (5). H is above Y (2, 1). Two between P(5) and Y(1) is wrong. Correct order: P=5, G=4, S=3, H=2, Y=1. Wait, two between P and Y: 5 down to 1 = 4, 3, 2. Three people. Let's re-map again: P=5, H=3, Y=2, G=6, S=5 (wrong). Correct: A=6, P=5, G=4, S=3, H=2, Y=1. Only two between P and Y is 4, 3, 2. Correct.