Duplicate Name

L3
ModelContextProtocolFilesystemStudent Database

Identify students with identical names from a 150-student database and generate a formatted namesake grouping report file.

Created by Lingjun Chen
2025-08-10
Pattern AnalysisData Extraction

Model Ranking

Click on the dots to view the trajectory of each task run
Model
Run Results
Pass@4
Pass^4
Avg Time
Avg Turns
Input Tokens
Output Tokens
Total Tokens
OpenAI
gpt-5-mini-high
4
/4
97.5s
5.0
36,943
12,250
49,193
Grok
grok-4
4
/4
130.8s
4.5
33,036
6,946
39,982
OpenAI
o3
4
/4
77.0s
4.3
21,699
5,798
27,497
Claude
claude-sonnet-4
3
/4
85.7s
5.3
26,045
3,024
29,068
Claude
claude-sonnet-4-low
3
/4
70.3s
7.3
75,267
3,843
79,110
OpenAI
gpt-5-high
3
/4
587.0s
4.3
32,679
15,410
48,089
OpenAI
gpt-5-mini-medium
3
/4
71.2s
5.5
31,281
7,849
39,131
Grok
grok-code-fast-1
3
/4
49.6s
4.0
19,919
517
26,236
OpenAI
gpt-5-medium
2
/4
85.0s
4.0
21,992
6,467
28,459
OpenAI
gpt-5-mini-low
2
/4
41.0s
4.8
37,943
3,916
41,859
Claude
claude-sonnet-4-high
1
/4
56.8s
6.0
51,553
3,607
55,160
Gemini
gemini-2-5-pro
1
/4
89.8s
5.8
15,818
5,731
21,548
OpenAI
gpt-5-low
1
/4
118.5s
4.0
15,800
7,109
22,908
OpenAI
gpt-oss-120b
1
/4
54.8s
4.3
36,220
4,833
41,053
MoonshotAI
kimi-k2-0711
1
/4
627.7s
26.5
1,098,115
17,417
1,115,532
Claude
claude-opus-4-1
0
/1
--
73.8s
4.0
13,960
1,167
15,127
DeepSeek
deepseek-chat
0
/4
289.2s
18.0
234,722
4,166
238,889
Gemini
gemini-2-5-flash
0
/4
77.4s
4.0
14,542
15,917
30,459
Z.ai
glm-4-5
0
/4
83.6s
6.0
35,216
1,918
37,133
OpenAI
gpt-4-1
0
/4
30.8s
6.3
58,053
1,501
59,554
OpenAI
gpt-4-1-mini
0
/4
48.4s
9.0
207,286
1,860
209,146
OpenAI
gpt-4-1-nano
0
/4
38.0s
9.8
71,837
3,484
75,321
OpenAI
gpt-5-nano-high
0
/4
145.3s
4.3
11,357
29,329
40,686
OpenAI
gpt-5-nano-low
0
/4
71.1s
4.5
11,283
14,669
25,952
OpenAI
gpt-5-nano-medium
0
/4
63.1s
4.3
11,184
12,220
23,404
MoonshotAI
kimi-k2-0905
0
/4
234.3s
9.0
116,039
3,366
119,405
OpenAI
o4-mini
0
/4
65.1s
7.5
37,998
5,449
43,447
Qwen
qwen-3-coder-plus
0
/4
198.4s
12.8
211,493
7,158
218,650
Qwen
qwen-3-max
0
/4
382.6s
29.0
1,214,650
7,154
1,221,804

Task State

Task Initial State Files
Download ZIP package to view the complete file structure
student_database/ ├── 20101250_Patricia_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20101701_Isabella_Davis/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20102572_Michael_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20104233_Robert_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20104498_Sarah_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20104653_Sophia_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20104675_Michael_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20104846_Christopher_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20107487_Mia_Martin/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20108742_Sarah_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20109144_Emma_Thomas/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20109803_Oliver_Hernandez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20111634_Isabella_Thomas/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20112439_Christopher_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20113368_William_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20113603_Robert_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20114397_Isabella_Martin/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20114869_Ethan_Martin/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20115252_Mason_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20115632_Elizabeth_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20115753_Charlotte_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20115924_Michael_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20116232_Olivia_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20119528_Thomas_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20122427_Karen_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20122977_Evelyn_Miller/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20123376_Joseph_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20125451_Barbara_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20126203_Barbara_Davis/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20126394_Olivia_Williams/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20126471_Ethan_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20127423_John_Williams/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20128249_Oliver_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20128879_Christopher_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20129898_Jessica_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20131271_Olivia_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20131518_Sophia_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20132026_Isabella_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20132370_James_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20132669_Noah_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20133527_Mason_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20133697_Isabella_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20135821_Thomas_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20136681_Benjamin_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20136890_Benjamin_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20137514_Lucas_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20139234_Harper_Martinez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20139637_Noah_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20139647_Patricia_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20141421_Linda_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20142085_William_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20142383_Amelia_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20143406_Susan_Martin/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20143830_James_Garcia/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20146035_Christopher_Garcia/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20146277_William_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20146279_Christopher_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20147301_James_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20147789_James_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20148681_John_Hernandez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20148778_Susan_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20149712_Jessica_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20151012_Harper_Miller/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20153174_Benjamin_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20153412_Charlotte_Martin/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20153606_James_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20153687_Richard_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20154518_John_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20154710_Benjamin_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20156469_Jennifer_Hernandez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20156522_Jennifer_Martinez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20156851_Noah_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20157943_Harper_Williams/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20158266_Sophia_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20158294_Sophia_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20158819_Sarah_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20159113_John_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20159695_James_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20161279_William_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20162253_Mason_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20162542_Mia_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20163356_Ava_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20164515_Patricia_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20164801_Noah_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20165511_Mary_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20166436_Christopher_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20166487_Barbara_Hernandez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20166564_Ava_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20166998_Ava_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20168311_Lucas_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20168491_Karen_Martinez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20169515_Thomas_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20171050_Christopher_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20171406_Mary_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20171613_Ethan_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20172106_Isabella_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20173259_Michael_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20173492_Richard_Miller/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20173501_Mary_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20173517_Susan_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20174207_Richard_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20174369_Mary_Garcia/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20175314_William_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20176169_Lucas_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20176947_Noah_Miller/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20177389_James_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20178687_Isabella_Anderson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20179461_William_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20179690_Linda_Thomas/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20181056_Sarah_Hernandez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20182020_Patricia_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20182390_Ethan_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20183149_David_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20183219_Charlotte_Williams/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20184489_Jessica_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20186154_Charlotte_Smith/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20186510_James_Thomas/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20187107_David_Martinez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20187144_Mary_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20187892_Christopher_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20187921_Mary_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20187967_Sarah_Davis/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20188937_James_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20189123_Mary_Martin/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20189192_Olivia_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20189268_Emma_Williams/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20189854_William_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20191265_Joseph_Lopez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20192725_Robert_Martinez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20194054_Michael_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20194160_Benjamin_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20194164_Sarah_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20194525_John_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20195164_Jennifer_Gonzalez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20195982_David_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20196776_William_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20196896_Olivia_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20196961_Joseph_Thomas/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20196998_Ethan_Wilson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20198548_Evelyn_Moore/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20199036_Benjamin_Hernandez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20199583_Mary_Brown/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20199735_Mason_Johnson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20199872_Sophia_Jackson/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20199980_James_Rodriguez/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20201385_John_Taylor/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20201800_John_Jones/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20202548_Robert_Miller/ │ ├── basic_info.txt │ └── recommendation_letter.txt ├── 20203855_Mia_Miller/ │ ├── basic_info.txt │ └── recommendation_letter.txt └── 20204611_Sarah_Wilson/ ├── basic_info.txt └── recommendation_letter.txt

Instruction

Please use FileSystem tools to finish the following task:

Please help me identify duplicate names from the list of all the 150 students. Do not use python code. Then generate a namesake.txt file to record the results in the following format, with each group written in three lines:

name: xxx count: xxx ids: xxx, xxx, ...

Leave one blank line between every two groups. If there are multiple duplicates, just list all corresponding IDs in the third line.



Verify

*.py
Python
#!/usr/bin/env python3
"""
Verification script for Student Database Task: Find Duplicate Names
Simplified version that only checks against expected results without folder validation
"""

import sys
from pathlib import Path
import os

def get_test_directory() -> Path:
    """Get the test directory from FILESYSTEM_TEST_DIR env var."""
    test_root = os.environ.get("FILESYSTEM_TEST_DIR")
    if not test_root:
        raise ValueError("FILESYSTEM_TEST_DIR environment variable is required")
    return Path(test_root)

def verify_namesake_file_exists(test_dir: Path) -> bool:
    """Verify that the namesake.txt file exists."""
    namesake_file = test_dir / "namesake.txt"
    
    if not namesake_file.exists():
        print("❌ File 'namesake.txt' not found")
        return False
    
    print("✅ Namesake file found")
    return True

def parse_namesake_file(test_dir: Path) -> dict:
    """Parse the namesake.txt file and return structured data."""
    namesake_file = test_dir / "namesake.txt"
    
    try:
        content = namesake_file.read_text()
        lines = content.strip().split('\n')
        
        namesakes = {}
        current_line = 0
        
        while current_line < len(lines):
            # Skip blank lines
            if not lines[current_line].strip():
                current_line += 1
                continue
            
            # Check if we have enough lines for a complete group
            if current_line + 2 >= len(lines):
                print(f"❌ Incomplete group at line {current_line + 1}")
                return {}
            
            # Parse group
            name_line = lines[current_line].strip()
            count_line = lines[current_line + 1].strip()
            ids_line = lines[current_line + 2].strip()
            
            # Extract name
            if not name_line.startswith("name: "):
                print(f"❌ Invalid name line format at line {current_line + 1}: {name_line}")
                return {}
            name = name_line.replace("name: ", "").strip()
            
            # Extract count
            if not count_line.startswith("count: "):
                print(f"❌ Invalid count line format at line {current_line + 2}: {count_line}")
                return {}
            count_str = count_line.replace("count: ", "").strip()
            try:
                count = int(count_str)
            except ValueError:
                print(f"❌ Invalid count format: {count_str}")
                return {}
            
            # Extract IDs
            if not ids_line.startswith("ids: "):
                print(f"❌ Invalid ids line format at line {current_line + 3}: {ids_line}")
                return {}
            ids_str = ids_line.replace("ids: ", "").strip()
            ids = [id.strip() for id in ids_str.split(",")]
            
            namesakes[name] = {
                'count': count,
                'ids': ids
            }
            
            current_line += 4  # Skip to next group (after blank line)
        
        return namesakes
        
    except Exception as e:
        print(f"❌ Error parsing namesake file: {e}")
        return {}

def verify_against_expected_results(namesakes: dict) -> bool:
    """Verify that the results match the expected answer.md content exactly."""
    
    # Expected duplicate names from answer.md (hardcoded)
    expected_duplicates = {
        'Isabella Smith': ['20132026', '20133697'],
        'Ava Lopez': ['20166564', '20166998'],
        'James Moore': ['20159695', '20188937'],
        'William Taylor': ['20175314', '20189854'],
        'Ethan Wilson': ['20182390', '20196998'],
        'Christopher Taylor': ['20128879', '20187892'],
        'William Anderson': ['20142085', '20146277'],
        'James Anderson': ['20147789', '20153606'],
        'Olivia Jones': ['20189192', '20196896'],
        'Mason Johnson': ['20115252', '20199735'],
        'Benjamin Jackson': ['20153174', '20194160'],
        'John Taylor': ['20194525', '20201385'],
        'Susan Anderson': ['20148778', '20173517'],
        'Christopher Moore': ['20112439', '20146279'],
        'Sarah Wilson': ['20158819', '20204611'],
        'Sarah Brown': ['20104498', '20108742']
    }
    
    # Check if exactly 16 duplicate names are found
    if len(namesakes) != 16:
        print(f"❌ Expected exactly 16 duplicate names, but found {len(namesakes)}")
        return False
    
    # Check if all expected duplicate names are present
    for expected_name in expected_duplicates:
        if expected_name not in namesakes:
            print(f"❌ Missing expected duplicate name: '{expected_name}'")
            return False
    
    # Check if all namesakes in the file are actually duplicates
    for name, data in namesakes.items():
        if name not in expected_duplicates:
            print(f"❌ Unexpected duplicate name found: '{name}' (not in expected list)")
            return False
        
        expected_ids = set(expected_duplicates[name])
        stated_ids = set(data['ids'])
        
        if expected_ids != stated_ids:
            print(f"❌ ID mismatch for '{name}':")
            print(f"   Expected: {sorted(expected_ids)}")
            print(f"   Stated: {sorted(stated_ids)}")
            return False
        
        # Verify count matches
        if data['count'] != 2:
            print(f"❌ Count mismatch for '{name}': expected 2, got {data['count']}")
            return False
    
    print("✅ All 16 expected duplicate names are correctly identified")
    print("✅ All student IDs match expected results")
    print("✅ All counts are correct (2 for each duplicate name)")
    return True

def main():
    """Main verification function."""
    test_dir = get_test_directory()
    print("🔍 Verifying Student Database Task: Find Duplicate Names...")
    
    # Check if namesake file exists
    print("\n--- File Existence Check ---")
    if not verify_namesake_file_exists(test_dir):
        print("\n❌ Basic verification failed, cannot proceed with content verification")
        sys.exit(1)
    
    # Parse the file and run content verification
    print("\n--- Content Verification ---")
    namesakes = parse_namesake_file(test_dir)
    
    if not namesakes:
        print("❌ Failed to parse namesake file")
        sys.exit(1)
    
    # Verify against expected results
    print("\n--- Results Verification ---")
    if not verify_against_expected_results(namesakes):
        print("\n❌ Task verification: FAIL")
        sys.exit(1)
    
    # Final result
    print("\n" + "="*50)
    print("✅ Namesake identification completed correctly!")
    print(f"🎉 Found exactly {len(namesakes)} duplicate names (16 expected)")
    print("🎉 Task verification: PASS")
    sys.exit(0)

if __name__ == "__main__":
    main()