Stage 2 summary at 50 accepted trajectories

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

tasks_gen/train/G1073/spec.md

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+# 1. Goal
+Summarise the parking sessions of the car parks of a car park operator. The
+operations team calls the class for each day. The class returns one row for each
+car park with the number of sessions, the total parking time and the total fee.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The interface {{P}}IF_PARK_EVAL exists in package $TMP. It is active.
+- The interface has the type TY_PARK_ID (CHAR 4), the type TY_TARIFF (CHAR 1),
+  the structure TY_SESSION with the components PARK_ID, TARIFF and DURATION_MIN,
+  the table type TT_SESSION (a standard table of TY_SESSION with an empty key),
+  the structure TY_SUMMARY with the components PARK_ID, SESSION_CNT, TOTAL_MIN
+  and TOTAL_FEE, the table type TT_SUMMARY (a standard table of TY_SUMMARY with
+  an empty key), and one method:
+  SUMMARIZE IMPORTING it_session TYPE tt_session
+            RETURNING VALUE(rt_summary) TYPE tt_summary.
+- DURATION_MIN is the parking time of one session in minutes.
+- The operations program collects the sessions of one day and passes them to the
+  class.
+
+# 4. Contract
+- Create the class {{P}}PARKING_EVAL in package $TMP.
+- The class is public and final. It has a public constructor without parameters.
+- The class implements {{P}}IF_PARK_EVAL.
+- Do not add other public methods.
+
+# 5. Business rules
+1. A session is valid when its tariff is A, B or C and its duration is greater
+   than 0 minutes. Ignore an invalid session completely. Do not count it, do not
+   add its duration and do not add a fee.
+2. The first 30 minutes of a valid session are free.
+3. The operator charges each started hour after the first 30 minutes. The first
+   started hour covers the minutes 31 to 90, the second started hour covers the
+   minutes 91 to 150, and so on.
+4. The price of one started hour depends on the tariff:
+   A = 2.00 EUR, B = 3.50 EUR, C = 5.00 EUR.
+5. The fee of one session is at most 20.00 EUR.
+6. The result has one row for each car park with at least one valid session.
+7. SESSION_CNT is the number of valid sessions of the car park.
+8. TOTAL_MIN is the sum of the durations of the valid sessions of the car park.
+9. TOTAL_FEE is the sum of the fees of the valid sessions of the car park.
+10. Sort the result in ascending order of PARK_ID.
+11. An empty input gives an empty result.
+
+# 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_PARK_EVAL. Do not create database tables,
+  CDS views or other objects.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.