Problems from Nada Open 2005

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Best Compromise0.0013597789792%2.1Easyen
Easter Eggs0.171366411844%9.0Harden
Ice Floe Jumping0.022867592847%9.2Harden
Quadratic Residues0.00751209982%4.0Mediumen
Shovelling Snow0.011138763343%8.9Harden