3996 A - Digit Counting 	
3997 B - Numerical surprises 	
3998 C - Prime k-tuple 	
3999 D - The longest constant gene 	
4000 E - Lazy Susan 	
4001 F - Square Painting 	
4002 G - The Ultimate Password 	
4003 H - Plagiarism Detection 	
4004 I - Space Beacon 	
4005 J - Ig-Nobel Prize

problemas do LIVE ARCHIVE ICPC

Resolvidos:

OK - A - Digit Counting  - nike
OK - B - Numerical surprises - nike
   - C - Prime k-tuple 	
   - D - The longest constant gene 	
   - E - Lazy Susan 	
   - F - Square Painting 	
OK - G - The Ultimate Password - KMP + PD
   - H - Plagiarism Detection 	
OK - I - Space Beacon - programação dinâmica
   - J - Ig-Nobel Prize