修复超重问题

main.go

@@ -97,7 +97,6 @@ func optimizePacking(con Container, box Box) ([]Placement, string, int) {
 	type candidate struct {
 		layout   []Placement
 		count    int
-		weight   float64
 		strategy string
 	}
 
@@ -133,38 +132,40 @@ func optimizePacking(con Container, box Box) ([]Placement, string, int) {
 				xCount = math.Floor(con.Length / r.Width)
 			}
 
-			total := int(xCount * yCount * zCount)
-			totalWeight := float64(total) * box.Weight
+			totalByVolume := int(xCount * yCount * zCount)
+			maxCountByWeight := int(math.Floor(con.WeightLimit / box.Weight))
+			actualCount := totalByVolume
+			if actualCount > maxCountByWeight {
+				actualCount = maxCountByWeight
+			}
 
-			if total > 0 {
-				fmt.Printf("Rotation: %v | Strategy: %s | Total: %d | Weight: %.2f kg\n", r, strategy, total, totalWeight)
+			if actualCount > 0 {
 				candidates = append(candidates, candidate{
-					layout:   generateLayout(r, xCount, yCount, zCount, strategy),
-					count:    total,
-					weight:   totalWeight,
+					layout:   generateLayout(r, xCount, yCount, zCount, strategy)[:actualCount],
+					count:    actualCount,
 					strategy: strategy,
 				})
 			}
 		}
 	}
 
-	maxCountUnderLimit := 0
+	if len(candidates) == 0 {
+		return nil, "", 0
+	}
+
+	maxCount := 0
 	var finalLayout []Placement
 	var finalStrategy string
 
 	for _, c := range candidates {
-		if c.count > maxCountUnderLimit && c.weight <= con.WeightLimit {
-			maxCountUnderLimit = c.count
+		if c.count > maxCount {
+			maxCount = c.count
 			finalLayout = c.layout
 			finalStrategy = c.strategy
 		}
 	}
 
-	if maxCountUnderLimit == 0 {
-		return candidates[0].layout, candidates[0].strategy, candidates[0].count
-	}
-
-	return finalLayout, finalStrategy, maxCountUnderLimit
+	return finalLayout, finalStrategy, maxCount
 }
 
 func generateRotations(con Container, box Box) []Box {