> 1263 Reflections 37 Southwestern European Regional Contest 1998 
>  1537 Identifying Legal Pascal Real Constants 37 North Central North America 1993 
>  2052 Fun Game 37 Beijing 2004 
>  2165 Gunman 37 Northeastern Europe 2004 
>  2066 Minimax Triangulation 38 Northwestern Europe 2004 
>  1301 The Umbrella Problem: 2054 38 South Central USA 2002 
>  1155 TELE 38 Croatia OI 2002 Final Exam - Second Day 
>  1216 Simulation Wizardry 38 Duke Internet Programming Contest 1992,UVA 114 
>  1353 Color Change of Go Game Pieces 38 Xi'an 2002 
>  1578 Instruens Fabulam 38 Mid-Central USA 2000 
>  1388 Hinge Node Problem 39 Taiwan 2001 
>  1377 Good Approximation Problem 39 Taiwan 2001 
>  1460 Firefighters 39 Southeastern Europe 2003 
>  2148 Color the Map 39 Japan 2004 
>  1310 Nonstop Travel 40 North Central North America 1997