Problems from CTU Open 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Ambiguous Result 299 68 23% 0.02 100 63 63% 7.2
Collatz Conjecture 6004 1359 23% 0.00 1162 941 81% 3.7
Domino Tiling 64 23 36% 0.05 24 16 67% 7.8
Intergalactic Mortgage 649 131 20% 0.08 117 82 70% 6.6
Invasion 875 335 38% 0.04 131 106 81% 5.7
Mine the Gradient 63 25 40% 0.11 23 18 78% 6.4
Simple Polygon 424 68 16% 0.23 74 28 38% 8.6
Text Encryption 1056 442 42% 0.00 453 386 85% 3.2