1 
P1  Mahmoud and Ehab and the evenodd game 
Codeforces 
Codeforces Round #473 (Div. 2) 
2 
P2  Dinner with Emma 
Codeforces 
Educational Codeforces Round 5 
3 
P3  PolandBall and Game 
Codeforces 
8VC Venture Cup 2017  Elimination Round 
4 
P4  Win or Freeze 
Codeforces 
Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2) 
5 
P5  A Lot of Games 
Codeforces 
Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 
6 
P6  Pie Rules 
Codeforces 
MemSQL Start[c]UP 3.0  Round 1 
7 
P7  MADMAX 
Codeforces 
Codeforces Round #459 (Div. 1) & Codeforces Round #459 (Div. 2) 
8 
P8  Put Knight! 
Codeforces 
School Regional Team Contest, Saratov, 2011 
9 
P9  Wet Shark and Flowers 
Codeforces 
Codeforces Round #341 (Div. 2) 
10 
P10  Andrey and Problem 
Codeforces 
Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) 
11 
P11  Bad Luck Island 
Codeforces 
Codeforces Round #301 (Div. 2) 
12 
P12  Jeff and Furik 
Codeforces 
Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 
13 
P13  Game with String 
Codeforces 
Codeforces Round #468 (Div. 1, based on Technocup 2018 Final Round) & Codeforces Round #468 (Div. 2, based on Technocup 2018 Final Round) 
14 
P14  Kolya and Tanya 
Codeforces 
Codeforces Round #324 (Div. 2) 
15 
P15  Ciel and Flowers 
Codeforces 
Codeforces Round #190 (Div. 2) 
16 
P16  Kyoya and Colored Balls 
Codeforces 
Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 
17 
P17  Rectangles 
Codeforces 
AIM Tech Round 4 (Div. 2) 
18 
P18  Pashmak and Buses 
Codeforces 
Codeforces Round #261 (Div. 2) 
19 
P19  What is the Probability ? 
UVA 

20 
P20  Yanu in Movie theatre 
SPOJ 

21 
P21  France '98 
UVA 

22 
P22  Vampires 
UVA 

23 
P23  Coupons 
UVA 

24 
P24  M&M Game 
SPOJ 

25 
P25  Coins Game 
SPOJ 

26 
P26  TRIVIADOR 
SPOJ 

27 
P27  Exclusively Edible 
UVA 
