Contest Name: 30450 - I Know Math (2 days, 16 hrs and 54 mins)

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Problem Name Online Judge Contest
1 P1 - Color the Fence Codeforces Codeforces Round #202 (Div. 2)
2 P2 - Misha and Changing Handles Codeforces Codeforces Round #285 (Div. 2)
3 P3 - Little Girl and Maximum Sum Codeforces Codeforces Round #169 (Div. 2)
4 P4 - Infinite Sequence Codeforces Codeforces Round #353 (Div. 2)
5 P5 - Restoring Painting Codeforces Codeforces Round #353 (Div. 2)
6 P6 - Fake tournament SPOJ
7 P7 - Bytelandian Blingors Network SPOJ
8 P8 - Brain's Photos Codeforces Codeforces Round #368 (Div. 2)
9 P9 - Bakery Codeforces Codeforces Round #368 (Div. 2)
10 P10 - The Cats and the Mouse SPOJ
11 P11 - Ones and zeros SPOJ
12 P12 - Laser Phones SPOJ
13 P13 - Two Buttons Codeforces Codeforces Round #295 (Div. 2)
14 P14 - Tricky Sum Codeforces Educational Codeforces Round 1
15 P15 - Magical Array Codeforces Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)
16 P16 - Candy I SPOJ
17 P17 - Little Pigs and Wolves Codeforces Codeforces Beta Round #87 (Div. 2 Only)
18 P18 - T-primes Codeforces Codeforces Round #142 (Div. 2)
19 P19 - The number of positions Codeforces Codeforces Beta Round #92 (Div. 2 Only)
20 P20 - Expression Codeforces Codeforces Round #274 (Div. 2)
21 P21 - Is he smart or is he smart SPOJ
22 P22 - The Knapsack Problem SPOJ
23 P23 - Princess Farida SPOJ
24 P24 - Philosophers Stone SPOJ
25 P25 - Minimum Step To One SPOJ
26 P26 - Adjacent Bit Counts SPOJ
27 P27 - Different is Good Codeforces Codeforces Round #352 (Div. 2)
28 P28 - Watto and Mechanism Codeforces Codeforces Round #291 (Div. 2)
29 P29 - A Lot of Games Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)
30 P30 - Positive or Negative A2 Online Judge
31 P31 - Easy Longest Increasing Subsequence SPOJ
32 P32 - Non-square Equation Codeforces Codeforces Round #144 (Div. 2)
33 P33 - Caesar's Legions Codeforces Codeforces Beta Round #89 (Div. 2)
34 P34 - Vasya and String Codeforces Codeforces Round #354 (Div. 2)
35 P35 - Cunning Gena Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)
36 P36 - Devu and Flowers Codeforces Codeforces Round #258 (Div. 2)
37 P37 - View Angle Codeforces Codeforces Round #159 (Div. 2)
38 P38 - Captain Marmot Codeforces Codeforces Round #271 (Div. 2)
39 P39 - Factovisors UVA
40 P40 - Dreamoon and Sums Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)
41 P41 - Booking System Codeforces Codeforces Round #241 (Div. 2)
42 P42 - Audition SPOJ
43 P43 - Worms Codeforces Codeforces Round #271 (Div. 2)
44 P44 - Eko SPOJ
45 P45 - Letter Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules)
46 P46 - Two Ends SPOJ
47 P47 - Aggressive cows SPOJ
48 P48 - Stripe Codeforces Codeforces Beta Round #18 (Div. 2 Only)