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"""
RecursiveCharacterTextSplitter ๅทฅไฝๅ็่ฏฆ่งฃ
ๅฑ็คบๅฆไฝๅฐ้ฟๆๆกฃๅๅๆๅฐๅ๏ผchunks๏ผ
"""
print("=" * 80)
print("RecursiveCharacterTextSplitter ๅทฅไฝๅ็")
print("=" * 80)
# ============================================================================
# Part 1: ไธบไปไน้่ฆๆๆฌๅๅฒ๏ผ
# ============================================================================
print("\n" + "=" * 80)
print("โ Part 1: ไธบไปไน้่ฆๆๆฌๅๅฒ๏ผ")
print("=" * 80)
print("""
้ฎ้ข๏ผๅๅงๆๆกฃ้ๅธธๅพ้ฟ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
ไธ็ฏ็ฝ้กตๆ็ซ ๏ผ5000 ๅญ
ไธไปฝๆๆฏๆๆกฃ๏ผ10000 ๅญ
ไธๆฌไนฆ็ไธ็ซ ๏ผ20000 ๅญ
ๅฆๆ็ดๆฅๅฐๆด็ฏๆๆกฃๅๆๅ้๏ผ
โ ไฟกๆฏๅฏๅบฆๅคชไฝ๏ผๆ ๅ
ณไฟกๆฏๅคชๅค๏ผ
โ ๆฃ็ดขไธ็ฒพๅ๏ผๆ ๆณๅฎไฝๅฐๅ
ทไฝๆฎต่ฝ๏ผ
โ ่ถ
ๅบๆจกๅ้ฟๅบฆ้ๅถ๏ผBERT ๆๅค 512 tokens๏ผ
่งฃๅณๆนๆก๏ผๆๆฌๅๅฒ๏ผText Splitting๏ผ
โ
ๅฐ้ฟๆๆกฃๅๆๅฐๅ๏ผchunks๏ผ
โ
ๆฏไธช chunk ็ฌ็ซๅปบ็ซๅ้็ดขๅผ
โ
ๆฃ็ดขๆถ่ฟๅๆ็ธๅ
ณ็ chunks
""")
# ============================================================================
# Part 2: ไฝ ็้กน็ฎ้
็ฝฎ
# ============================================================================
print("\n" + "=" * 80)
print("โ๏ธ Part 2: ไฝ ็้กน็ฎ้
็ฝฎ")
print("=" * 80)
print("""
ๅจ config.py ไธญ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
CHUNK_SIZE = 250 # ๆฏไธชๅๆๅค 250 ไธช tokens
CHUNK_OVERLAP = 0 # ๅไน้ดไธ้ๅ
ๅจ document_processor.py ไธญ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
text_splitter = RecursiveCharacterTextSplitter.from_tiktoken_encoder(
chunk_size=250, # ๆฏๅ 250 tokens
chunk_overlap=0 # ๆ ้ๅ
)
""")
# ============================================================================
# Part 3: RecursiveCharacterTextSplitter ็ๆ ธๅฟๆบๅถ
# ============================================================================
print("\n" + "=" * 80)
print("๐ Part 3: RecursiveCharacterTextSplitter ๆ ธๅฟๆบๅถ")
print("=" * 80)
print("""
"Recursive" ็ๅซไน๏ผ้ๅฝๅผๅๅฒ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
ไธๆฏ็ฎๅ็ฒๆดๅฐๆๅญ็ฌฆๆฐๅๅ๏ผ่ๆฏๆ็
งๅ้็ฌฆ็ไผๅ
็บง้ๅฝๅๅ๏ผ
ๅ้็ฌฆไผๅ
็บง๏ผไป้ซๅฐไฝ๏ผ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
1. "\\n\\n" ๅๆข่ก๏ผๆฎต่ฝๅ้๏ผ โ ๆไผๅ
2. "\\n" ๅๆข่ก๏ผๅฅๅญๅ้๏ผ
3. " " ็ฉบๆ ผ๏ผ่ฏ่ฏญๅ้๏ผ
4. "" ๅญ็ฌฆ็บงๅซๅๅ โ ๆๅๆๆฎต
ๅทฅไฝๆต็จ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Step 1: ๅฐ่ฏ็จ "\\n\\n" ๅๅฒ
โ
ๆฏๅ้ฝ < 250 tokens?
โ No (ๆๅๅคชๅคง)
Step 2: ๅฏนๅคงๅ็จ "\\n" ๅๅฒ
โ
ๆฏๅ้ฝ < 250 tokens?
โ No (ๆๅ่ฟๅคชๅคง)
Step 3: ๅฏนๅคงๅ็จ " " ๅๅฒ
โ
ๆฏๅ้ฝ < 250 tokens?
โ No (ๆๅไปๅคชๅคง)
Step 4: ๅผบๅถๆๅญ็ฌฆๅๅ
โ
ไฟ่ฏๆฏๅ <= 250 tokens โ
""")
# ============================================================================
# Part 4: ๅฎ้
็คบไพ - ๆๅจๆจกๆๅๅฒ่ฟ็จ
# ============================================================================
print("\n" + "=" * 80)
print("๐ก Part 4: ๅฎ้
็คบไพ - ๆๅจๆจกๆๅๅฒ่ฟ็จ")
print("=" * 80)
# ็คบไพๆๆกฃ
document = """ไบบๅทฅๆบ่ฝ็ฎไป
ไบบๅทฅๆบ่ฝ๏ผAI๏ผๆฏ่ฎก็ฎๆบ็งๅญฆ็ไธไธชๅๆฏใๅฎ่ดๅไบๅๅปบ่ฝๅคๆง่ก้ๅธธ้่ฆไบบ็ฑปๆบ่ฝ็ไปปๅก็็ณป็ปใ
ๆบๅจๅญฆไน ๆฏไบบๅทฅๆบ่ฝ็ไธไธชๅญ้ขๅใๅฎไฝฟ่ฎก็ฎๆบ่ฝๅคไปๆฐๆฎไธญๅญฆไน ๅนถๆน่ฟๅ
ถๆง่ฝใๆทฑๅบฆๅญฆไน ๆฏๆบๅจๅญฆไน ็ไธ็งๆนๆณ๏ผไฝฟ็จๅคๅฑ็ฅ็ป็ฝ็ปใ
่ช็ถ่ฏญ่จๅค็๏ผNLP๏ผๆฏๅฆไธไธช้่ฆ็AI้ขๅใๅฎๅค็่ฎก็ฎๆบไธไบบ็ฑป่ฏญ่จไน้ด็ไบคไบใ"""
print(f"\nๅๅงๆๆกฃ๏ผ")
print("โ" * 80)
print(document)
print("โ" * 80)
print(f"ๆๆกฃ้ฟๅบฆ๏ผ{len(document)} ๅญ็ฌฆ")
# ๆจกๆ RecursiveCharacterTextSplitter ็ๅทฅไฝ
def count_tokens(text):
"""็ฎๅ็ token ่ฎกๆฐ๏ผๅฎ้
ไฝฟ็จ tiktoken๏ผ"""
# ไธญๆ๏ผๅคง็บฆ 1 ๅญ = 1.5 tokens
# ่ฑๆ๏ผๅคง็บฆ 1 ่ฏ = 1 token
return int(len(text) * 0.7) # ็ฎๅไผฐ็ฎ
print(f"\nไผฐ็ฎ tokens ๆฐ๏ผ{count_tokens(document)} tokens")
# Step 1: ๅฐ่ฏๆๅๆข่กๅๅฒ
print("\n" + "โ" * 80)
print("Step 1: ๆ '\\n\\n' (ๆฎต่ฝ) ๅๅฒ")
print("โ" * 80)
paragraphs = document.split('\n\n')
print(f"\nๅๅฒๆ {len(paragraphs)} ไธชๆฎต่ฝ๏ผ\n")
for i, para in enumerate(paragraphs, 1):
token_count = count_tokens(para)
status = "โ
" if token_count <= 250 else "โ ่ถ
ๅบ้ๅถ"
print(f"ๆฎต่ฝ {i}: {token_count} tokens {status}")
print(f" ๅ
ๅฎน: {para[:60]}...")
print()
# ๅ่ฎพๆไธชๆฎต่ฝ่ถ
ๅบ้ๅถ
large_para = """ๆบๅจๅญฆไน ๆฏไบบๅทฅๆบ่ฝ็ไธไธชๅญ้ขๅใๅฎไฝฟ่ฎก็ฎๆบ่ฝๅคไปๆฐๆฎไธญๅญฆไน ๅนถๆน่ฟๅ
ถๆง่ฝใๆทฑๅบฆๅญฆไน ๆฏๆบๅจๅญฆไน ็ไธ็งๆนๆณ๏ผไฝฟ็จๅคๅฑ็ฅ็ป็ฝ็ปใ"""
if count_tokens(large_para) > 250:
print("โ" * 80)
print("Step 2: ๆฎต่ฝๅคชๅคง๏ผๆ '\\n' (ๅฅๅญ) ๅๅฒ")
print("โ" * 80)
sentences = large_para.split('ใ')
print(f"\nๅๅฒๆ {len(sentences)} ไธชๅฅๅญ๏ผ\n")
for i, sent in enumerate(sentences, 1):
if sent.strip():
token_count = count_tokens(sent)
status = "โ
" if token_count <= 250 else "โ"
print(f"ๅฅๅญ {i}: {token_count} tokens {status}")
print(f" ๅ
ๅฎน: {sent.strip()}")
print()
# ============================================================================
# Part 5: chunk_overlap ็ไฝ็จ
# ============================================================================
print("\n" + "=" * 80)
print("๐ Part 5: chunk_overlap๏ผๅ้ๅ ๏ผ็ไฝ็จ")
print("=" * 80)
print("""
ไฝ ็้กน็ฎ่ฎพ็ฝฎ๏ผCHUNK_OVERLAP = 0๏ผๆ ้ๅ ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
ๆ ้ๅ ็ๅๅ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ Chunk 1 โโ Chunk 2 โโ Chunk 3 โ
โ 250 tok โโ 250 tok โโ 250 tok โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ
่พน็ๅฏ่ฝๅๆญ่ฏญไน
ๆ้ๅ ็ๅๅ๏ผCHUNK_OVERLAP = 50๏ผ๏ผ
โโโโโโโโโโโโ
โ Chunk 1 โ
โ 250 tok โ
โโโโโโโโโโโโ
โโโโโโโโโโโโ
โ Chunk 2 โ
โ 250 tok โ
โโโโโโโโโโโโ
โโโโโโโโโโโโ
โ Chunk 3 โ
โ 250 tok โ
โโโโโโโโโโโโ
ไผ็น๏ผ
โ
ไฟ็ไธไธๆ่ฟ่ดฏๆง
โ
้ฟๅ
ๅ
ณ้ฎไฟกๆฏ่ขซๅๆญ
โ
ๆ้ซๆฃ็ดขๅ็กฎ็ (+5-10%)
็ผบ็น๏ผ
โ ๅญๅจ็ฉบ้ดๅขๅ 20-30%
โ ๅฏ่ฝ่ฟๅ้ๅคๅ
ๅฎน
ไธบไปไนไฝ ็้กน็ฎ่ฎพไธบ 0๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ
่็ๅญๅจ็ฉบ้ด
โ
้ฟๅ
้ๅค
โ
้
ๅ CrossEncoder ้ๆๅทฒ็ป่ถณๅคๅ็กฎ
ๆจ่่ฎพ็ฝฎ๏ผ
- CHUNK_OVERLAP = 0: ๅฟซ้ๅๅใๅญๅจๅ้
- CHUNK_OVERLAP = 50: ็ไบง็ฏๅขใ้ซ็ฒพๅบฆ่ฆๆฑ โญ
- CHUNK_OVERLAP = 100: ๅ
ณ้ฎๅบ็จใๅป็ๆณๅพ็ญ
""")
# ============================================================================
# Part 6: from_tiktoken_encoder ็ไฝ็จ
# ============================================================================
print("\n" + "=" * 80)
print("๐ฏ Part 6: from_tiktoken_encoder ็็นๆฎไนๅค")
print("=" * 80)
print("""
ไฝ ็ไปฃ็ ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
RecursiveCharacterTextSplitter.from_tiktoken_encoder(
chunk_size=250,
chunk_overlap=0
)
ไธไฝฟ็จ tiktoken๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
RecursiveCharacterTextSplitter(
chunk_size=250, # โ ่ฟ้ๆฏๅญ็ฌฆๆฐ๏ผไธๆฏ tokens๏ผ
chunk_overlap=0
)
ๅบๅซ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
ๆฎ้ๆจกๅผ๏ผๆๅญ็ฌฆๆฐๅๅ
โโ chunk_size=250 โ 250 ไธชๅญ็ฌฆ
โโ ไธญๆ๏ผๅคง็บฆ 250 ไธชๅญ = 375 tokens๏ผ่ถ
ๆ ๏ผ๏ผ
โโ ่ฑๆ๏ผๅคง็บฆ 50 ไธชๅ่ฏ = 50 tokens๏ผๅคชๅฐ๏ผ๏ผ
tiktoken ๆจกๅผ๏ผๆ tokens ๅๅ โญ
โโ chunk_size=250 โ ็ฒพ็กฎ 250 ไธช tokens
โโ ไธญๆ๏ผๅคง็บฆ 166 ไธชๅญ = 250 tokens โ
โโ ่ฑๆ๏ผๅคง็บฆ 190 ไธชๅ่ฏ = 250 tokens โ
tiktoken ๆฏไปไน๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
OpenAI ็ tokenizer๏ผไธ GPT/BERT ็ๅ่ฏๆนๅผไธ่ด
ไผ็น๏ผ
โ
็ฒพ็กฎๆงๅถ chunk ๅคงๅฐ
โ
ไธ Embedding ๆจกๅ็ token ้ๅถไธ่ด
โ
ไธญ่ฑๆ้ฝ่ฝๅ็กฎๅค็
ไฝ ็้กน็ฎไฝฟ็จ tiktoken ๆฏๆญฃ็กฎไธๆจ่็ๅๆณ๏ผ
""")
# ============================================================================
# Part 7: ๅฎๆด็ๅๅฒๆต็จๅฏ่งๅ
# ============================================================================
print("\n" + "=" * 80)
print("๐ Part 7: ๅฎๆด็ๅๅฒๆต็จๅฏ่งๅ")
print("=" * 80)
print("""
ๅๅงๆๆกฃ (5000 tokens)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ็ฌฌไธ็ซ ๏ผไบบๅทฅๆบ่ฝ็ฎไป โ
โ โ
โ ไบบๅทฅๆบ่ฝ๏ผAI๏ผๆฏ่ฎก็ฎๆบ็งๅญฆ็ไธไธชๅๆฏ... โ
โ โ
โ ็ฌฌไบ็ซ ๏ผๆบๅจๅญฆไน โ
โ โ
โ ๆบๅจๅญฆไน ๆฏAI็ไธไธชๅญ้ขๅ... โ
โ โ
โ ็ฌฌไธ็ซ ๏ผๆทฑๅบฆๅญฆไน โ
โ ... โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ
RecursiveCharacterTextSplitter
(chunk_size=250, overlap=0)
โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Chunk 1 (250 tokens)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ็ฌฌไธ็ซ ๏ผไบบๅทฅๆบ่ฝ็ฎไป โ
โ โ
โ ไบบๅทฅๆบ่ฝ๏ผAI๏ผๆฏ่ฎก็ฎๆบ็งๅญฆ็ไธไธชๅๆฏใๅฎ่ดๅ... โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ๅญๅ
ฅๅ้ๆฐๆฎๅบ
Chunk 2 (250 tokens)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ไบบๅทฅๆบ่ฝๅ
ๆฌๅคไธชๅญ้ขๅ๏ผๅฆๆบๅจๅญฆไน ใ... โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ๅญๅ
ฅๅ้ๆฐๆฎๅบ
Chunk 3 (250 tokens)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ็ฌฌไบ็ซ ๏ผๆบๅจๅญฆไน โ
โ โ
โ ๆบๅจๅญฆไน ๆฏAI็ไธไธชๅญ้ขๅใๅฎไฝฟ่ฎก็ฎๆบ่ฝๅค... โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ ๅญๅ
ฅๅ้ๆฐๆฎๅบ
...็ปง็ปญๅๅฒๆ็บฆ 20 ไธช chunks
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
ๆฃ็ดขๆถ๏ผ
็จๆท้ฎ้ข: "ไปไนๆฏๆบๅจๅญฆไน ๏ผ"
โ
ๅ้ๆฃ็ดข Top 20 chunks
โ
โโ Chunk 3 (็ธๅ
ณๅบฆ: 0.92) โ ๆ็ธๅ
ณ
โโ Chunk 4 (็ธๅ
ณๅบฆ: 0.88)
โโ Chunk 1 (็ธๅ
ณๅบฆ: 0.75)
โโ ...
โ
CrossEncoder ้ๆ โ Top 5
โ
่ฟๅๆ็ธๅ
ณ็็ๆฎต็ป LLM ็ๆ็ญๆก
""")
# ============================================================================
# Part 8: ๅ
ณ้ฎๅๆฐ่ฐไผๅปบ่ฎฎ
# ============================================================================
print("\n" + "=" * 80)
print("โ๏ธ Part 8: ๅ
ณ้ฎๅๆฐ่ฐไผๅปบ่ฎฎ")
print("=" * 80)
print("""
ๅๆฐ้
็ฝฎๅปบ่ฎฎ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
CHUNK_SIZE๏ผๅๅคงๅฐ๏ผ๏ผ
โโ 100-200: ็ญๆๆกฃใ็ฒพ็กฎๆฃ็ดข
โโ 250-500: ้็จๅบๆฏ โญ (ไฝ ็้กน็ฎ)
โโ 500-1000: ้ฟๆๆกฃใ้่ฆๆดๅคไธไธๆ
CHUNK_OVERLAP๏ผ้ๅ ๏ผ๏ผ
โโ 0: ๅฟซ้ๅๅใๅญๅจๅ้ (ไฝ ็้กน็ฎ)
โโ 50: ็ไบง็ฏๅขๆจ่ โญ
โโ 100: ้ซ็ฒพๅบฆ่ฆๆฑ
โโ 150+: ๅ
ณ้ฎๅบ็จ
ไฝ ็้กน็ฎ้
็ฝฎ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
CHUNK_SIZE = 250 โ ้ไธญ๏ผ้ๅๅคงๅคๆฐๅบๆฏ
CHUNK_OVERLAP = 0 โ ๏ธ ๅปบ่ฎฎๆนไธบ 50-100
ๆจ่ไผๅ๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
CHUNK_SIZE = 400 # ๅขๅ ไธไธๆ
CHUNK_OVERLAP = 100 # ๆทปๅ ้ๅ ไฟ่ฏ่ฟ่ดฏๆง
็็ฑ๏ผ
โ
400 tokens ่ถณๅคๅ
ๅซๅฎๆด็ๆฎต่ฝ
โ
100 tokens ้ๅ ้ฟๅ
ๅ
ณ้ฎไฟกๆฏ่ขซๅๆญ
โ
้
ๅ CrossEncoder๏ผๅ็กฎ็ๅฏๆๅ 8-12%
""")
# ============================================================================
# Part 9: ๆป็ป
# ============================================================================
print("\n" + "=" * 80)
print("๐ Part 9: ๆ ธๅฟ่ฆ็นๆป็ป")
print("=" * 80)
print("""
RecursiveCharacterTextSplitter ็ๅทฅไฝๅ็๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
1๏ธโฃ ้ๅฝๅๅฒ๏ผ
โโ ๆไผๅ
็บงๅฐ่ฏๅ้็ฌฆ๏ผ\\n\\n โ \\n โ ็ฉบๆ ผ โ ๅญ็ฌฆ
2๏ธโฃ ๆบ่ฝๅๅ๏ผ
โโ ไฟๆ่ฏญไนๅฎๆดๆง๏ผไผๅ
ๅจๆฎต่ฝ/ๅฅๅญ่พน็ๅๅ
3๏ธโฃ ็ฒพ็กฎๆงๅถ๏ผ
โโ from_tiktoken_encoder ็กฎไฟๆฏๅๆฐๅฅฝ 250 tokens
4๏ธโฃ ๅฏ้้ๅ ๏ผ
โโ CHUNK_OVERLAP ไฟ็ไธไธๆ่ฟ่ดฏๆง
5๏ธโฃ ไฝ ็้กน็ฎๆต็จ๏ผ
ๅๅงๆๆกฃ
โ RecursiveCharacterTextSplitter
250-token chunks
โ HuggingFace Embeddings
ๅ้ๆฐๆฎๅบ
โ ๅ้ๆฃ็ดข (Top 20)
ๅ้ chunks
โ CrossEncoder ้ๆ
ๆ็ป Top 5 chunks
โ
ๅ็ป LLM ็ๆ็ญๆก
ๅ
ณ้ฎไผๅฟ๏ผ
โ
ๆบ่ฝๅๅ๏ผไฟๆ่ฏญไนๅฎๆด
โ
็ฒพ็กฎๆงๅถ chunk ๅคงๅฐ
โ
ๆฏๆไธญ่ฑๆๆททๅๆๆฌ
โ
ไธๅ้ๆฃ็ดข้
ๅๅฎ็พ
่ฟๅฐฑๆฏไธบไปไนไฝ ็้กน็ฎ่ฝๅคๅ็กฎๆฃ็ดขๅๅ็ญ้ฎ้ข๏ผ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
""")
print("\n" + "=" * 80)
print("โ
่งฃๆๅฎๆ๏ผ็ฐๅจไฝ ๅบ่ฏฅ็่งฃไบๆๆฌๅๅฒ็ๅ็")
print("=" * 80)
print()
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