Contest Name: 37119 - prefix sum and bit masking contest( Menofia ) (5 days, 17 hrs and 14 mins)

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Problem Name Online Judge Contest
1 P1 - Cumulative Sum Query SPOJ
2 P2 - Kuriyama Mirai's Stones Codeforces Codeforces Round #248 (Div. 2)
3 P3 - Pasha and String Codeforces Codeforces Round #297 (Div. 2)
4 P4 - Tell me the frequencies! UVA
5 P5 - Maximum Absurdity Codeforces Codeforces Round #193 (Div. 2)
6 P6 - Anya and Smartphone Codeforces Codeforces Round #293 (Div. 2)
7 P7 - Removing Columns Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)
8 P8 - Valera and Contest Codeforces Codeforces Round #216 (Div. 2)
9 P9 - Little Frog Codeforces Codeforces Beta Round #49 (Div. 2)
10 P10 - Vasya and Basketball Codeforces Codeforces Round #281 (Div. 2)
11 P11 - Multitasking Codeforces Codeforces Round #225 (Div. 2)
12 P12 - Ladder Codeforces Codeforces Round #171 (Div. 2)
13 P13 - Diverse Permutation Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)
14 P14 - Little Elephant and Bits Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)
15 P15 - Building Permutation Codeforces Codeforces Round #175 (Div. 2)
16 P16 - Ilya and Queries Codeforces Codeforces Round #186 (Div. 2)
17 P17 - Producing Snow Codeforces VK Cup 2018 - Round 1
18 P18 - Tavas and SaDDas Codeforces Codeforces Round #299 (Div. 2)
19 P19 - Little Girl and Maximum XOR Codeforces Codeforces Round #169 (Div. 2)
20 P20 - Lucky Numbers (easy) Codeforces Codeforces Beta Round #77 (Div. 2 Only)
21 P21 - Raising Bacteria Codeforces Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]
22 P22 - Fedor and New Game Codeforces Codeforces Round #267 (Div. 2)
23 P23 - Luggage UVA
24 P24 - Fence Codeforces Codeforces Round #211 (Div. 2)
25 P25 - Bits Codeforces Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)
26 P26 - Repair road SPOJ
27 P27 - CD UVA
28 P28 - Bars UVA
29 P29 - Preparing Olympiad Codeforces Codeforces Round #306 (Div. 2)
30 P30 - The Child and Set Codeforces Codeforces Round #250 (Div. 2)
31 P31 - Short Program Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2)