| items = [("A", 2, 3), ("B", 3, 4), ("C", 4, 5), ("D", 5, 8), ("E", 9, 10)] |
| capacity = 10 |
| dp = [[0] * (capacity + 1) for _ in range(len(items) + 1)] |
| for i, (_, weight, value) in enumerate(items, 1): |
| for c in range(capacity + 1): |
| dp[i][c] = dp[i - 1][c] |
| if weight <= c: |
| dp[i][c] = max(dp[i][c], dp[i - 1][c - weight] + value) |
| c, chosen = capacity, [] |
| for i in range(len(items), 0, -1): |
| if dp[i][c] != dp[i - 1][c]: |
| name, weight, _ = items[i - 1] |
| chosen.append(name) |
| c -= weight |
| chosen.reverse() |
| weight = sum(w for name, w, _ in items if name in chosen) |
| assert weight <= capacity |
| result = {"items": chosen, "weight": weight, "value": dp[-1][capacity]} |
| import json |
| print(json.dumps(result, ensure_ascii=False, sort_keys=True)) |
|
|
