Stage 2 summary at 50 accepted trajectories

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/G1057/spec.md

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+# 1. Goal
+A freight forwarder prices air freight shipments. The sales desk calls one class
+for each shipment. The class returns the chargeable weight, the freight, the
+surcharges and the total charge of the shipment.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The interface {{P}}IF_AIR_FREIGHT exists in package $TMP. It is active.
+- The interface defines the input types, the result structure, the goods
+  categories, the reason codes and one method. Read the interface before you
+  start.
+- The method receives the actual weight in kilograms, the volume in cubic
+  centimetres, the goods category and a flag that marks a dangerous goods
+  shipment.
+- The result structure has one field for the chargeable weight, one field for
+  each amount and one field for the reason.
+
+# 4. Contract
+- Create the class {{P}}AIR_FREIGHT_PRICER in package $TMP.
+- The class is public, final and has a public constructor without parameters.
+- The class implements {{P}}IF_AIR_FREIGHT.
+- Do not add other public methods.
+
+# 5. Business rules
+Apply the rules in this sequence.
+1. If the actual weight is not positive, return BAD_WEIGHT.
+2. If the volume is not positive, return BAD_VOLUME.
+3. If the category is not one of the categories of the interface, return
+   BAD_CATEGORY.
+4. The volumetric weight is the volume divided by 6000. The chargeable weight
+   is the larger of the actual weight and the volumetric weight, rounded up to
+   the next whole kilogram. A value that is already a whole number does not
+   change.
+5. If the chargeable weight is more than 3000 kg, return TOO_HEAVY.
+6. The base rate per kilogram depends on the chargeable weight:
+   - up to 45 kg: 9.00
+   - more than 45 kg and up to 100 kg: 7.20
+   - more than 100 kg and up to 500 kg: 5.60
+   - more than 500 kg: 4.30
+7. The category factor is 1.00 for the general category, 1.25 for the
+   perishable category and 1.50 for the valuable category.
+8. The freight is the chargeable weight multiplied by the base rate and by the
+   category factor.
+9. If the shipment is dangerous, the dangerous goods surcharge is 40 per cent
+   of the freight. Otherwise the dangerous goods surcharge is zero.
+10. The fuel surcharge is 12 per cent of the freight plus the dangerous goods
+    surcharge.
+11. The security fee is 15.00.
+12. The total is the freight plus the dangerous goods surcharge plus the fuel
+    surcharge plus the security fee.
+13. Round each amount to two decimal places before you use it in the next step.
+14. If one of the rules 1 to 5 fails, return the reason and set every numeric
+    field of the result to zero. If no rule fails, return OK.
+
+# 6. Constraints
+- Release target: SAP_BASIS 816 (ABAP Platform 2025).
+- Coding standards: Clean ABAP. Method length below 40 statements. No global
+  variables. No comment that restates the code.
+- Out of scope: do not change {{P}}IF_AIR_FREIGHT.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.