Problems from 2012 ICPC World Finals Practice

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Counting Stars 2582 904 35% 0.00 825 701 85% 2.8
Heliocentric 1043 645 62% 0.00 600 565 94% 1.7
In Or Out 1267 415 33% 0.00 407 358 88% 2.9
Limited Correspondence 244 56 23% 0.05 50 33 66% 6.4
Matrix Inverse 1590 572 36% 0.00 548 461 84% 2.7
Polish Notation 258 86 33% 0.00 88 74 84% 3.2
Preludes 968 553 57% 0.00 538 506 94% 1.7
Prime Spiral 260 110 42% 0.00 82 77 94% 2.7
Reversing Roads 613 177 29% 0.00 155 128 83% 4.7
SierpiƄski Circumference 1544 596 39% 0.00 517 466 90% 2.4
Statistics 3914 1747 45% 0.00 1680 1539 92% 1.8