Easy:
Physics Practical - http://codeforces.com/problemset/problem/253/B
Multicolored Marbles - http://codeforces.com/problemset/problem/209/A
Substring and Subsequences - http://codeforces.com/problemset/problem/163/A
Message - http://codeforces.com/problemset/problem/156/A
The least round way - http://codeforces.com/problemset/problem/2/B
Medium:
Choosing Balls - http://codeforces.com/problemset/problem/264/C
Chilly Willy - http://codeforces.com/problemset/problem/248/B
Barcode - http://codeforces.com/problemset/problem/225/C
Numbers - http://codeforces.com/problemset/problem/213/B
Police Station - http://codeforces.com/problemset/problem/208/C
AlgoRace - http://www.codeforces.com/problemset/problem/187/B
Wizards and Huge Prize - http://codeforces.com/problemset/problem/167/B
Hard:
Maximum Watterfall - http://codeforces.com/problemset/problem/269/D
Greenhouse Effect - http://codeforces.com/problemset/problem/270/D
Wall Bars - http://codeforces.com/problemset/problem/270/D
Dormitory - http://codeforces.com/problemset/problem/254/E
Piglet's Birthday - http://codeforces.com/problemset/problem/248/E
Two Strings - http://codeforces.com/problemset/problem/223/B
Relay Race - http://codeforces.com/problemset/problem/214/E
Logo Turtle - http://codeforces.com/problemset/problem/132/C
Cakewalk:
Roadside Trees (simplified) - http://codeforces.com/problemset/problem/265/B
Squares - http://codeforces.com/problemset/problem/263/B
Increase and Decrease - http://codeforces.com/problemset/problem/246/B
Dragons - http://codeforces.com/problemset/problem/230/A
Little Elephant and Sorting - http://codeforces.com/problemset/problem/205/B
File List - http://codeforces.com/problemset/problem/174/B
Magical Boxes - http://codeforces.com/problemset/problem/269/A
Hierarchy - http://codeforces.com/problemset/problem/17/B
Coins - http://codeforces.com/problemset/problem/58/B
Arrival of General - http://codeforces.com/problemset/problem/144/A
Easy:
Below the Diagonal - http://codeforces.com/problemset/problem/266/C
Escape from Stones - http://codeforces.com/problemset/problem/265/C
Game with Coin - http://codeforces.com/problemset/problem/245/C
Balls and Boxes - http://codeforces.com/problemset/problem/260/C
Anagram - http://codeforces.com/problemset/problem/254/C
Queue - http://codeforces.com/problemset/problem/141/C
Hometask - http://codeforces.com/problemset/problem/214/B
Medium:
Plus and Xor - http://codeforces.com/problemset/problem/58/B
Sum - http://codeforces.com/problemset/problem/257/D
Black and White Tree - http://codeforces.com/problemset/problem/260/D
Dispute - http://codeforces.com/problemset/problem/242/D
LCM Challange - http://codeforces.com/problemset/problem/236/C
Trails and Glades - http://codeforces.com/problemset/problem/209/C
Deputies - http://codeforces.com/problemset/problem/173/D
New Year Snowman - http://codeforces.com/problemset/problem/140/C
Hard:
Word Eater Brothers - http://codeforces.com/problemset/problem/238/C
Zero One - http://codeforces.com/problemset/problem/135/C
Candy Shop - http://codeforces.com/problemset/problem/183/E
Zebra Tower - http://codeforces.com/problemset/problem/159/E
Competition - http://codeforces.com/problemset/problem/144/E
Easy:
Dominoes - http://codeforces.com/problemset/problem/267/B
Infinite Maze - http://codeforces.com/problemset/problem/196/B
Variable, or There and Back Again - http://codeforces.com/problemset/problem/164/A
Chamber of Secrets - http://codeforces.com/problemset/problem/173/B
Statues - http://codeforces.com/problemset/problem/129/C
Fire Again - http://codeforces.com/problemset/problem/35/C
Medium:
Cycle in Graph - http://codeforces.com/problemset/problem/263/D
Weak Memory - http://codeforces.com/problemset/problem/187/C
Fools and Roads - http://codeforces.com/problemset/problem/191/C
Subway - http://codeforces.com/problemset/problem/131/D
Dorm Water Supply - http://codeforces.com/problemset/problem/108/C
Cthulhu - http://codeforces.com/problemset/problem/104/C
Chessboard Billiard - http://codeforces.com/problemset/problem/74/C
Ant on the Tree - http://codeforces.com/problemset/problem/29/D
Hard:
Bertown Roads - http://codeforces.com/problemset/problem/118/E
Wormhouse - http://codeforces.com/problemset/problem/62/D
Fairy - http://codeforces.com/problemset/problem/19/E
Interesting Graphs and Apples - http://codeforces.com/problemset/problem/9/E
Easy:
Where do I turn? - http://codeforces.com/problemset/problem/227/A
Surrounded - http://codeforces.com/problemset/problem/190/B
Zoo - http://codeforces.com/problemset/problem/183/B
Medium:
View Angle - http://codeforces.com/problemset/problem/257/C
Magic Box - http://codeforces.com/problemset/problem/231/D
Stars - http://codeforces.com/problemset/problem/213/D
Hard:
Delivering Carcinogen - http://codeforces.com/problemset/problem/199/E
Paint Tree - http://codeforces.com/problemset/problem/196/C
Test měl 14 jednobodových otázek, zde.
Ročník 1: 0, 0.5, 5.5, 2.5 bodů. Průměr 2.25
Ročník 2: 4, 8 bodů. Průměr 6
Ročník 3: 0.5, 0.5, 2.5, 5.5, 6.5, 7 bodů. Průměr 3.75
Ročník 4: 3.5, 3.5, 4, 4.5, 5.5 bodů. Průměr 4.2