Contest Name: 38604 - sheet #1 (12 days and 55 mins)

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Problem Name Online Judge Contest
1 P1 - Worms Evolution Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format)
2 P2 - Cows and Primitive Roots Codeforces Codeforces Round #174 (Div. 2)
3 P3 - Funky Numbers Codeforces Codeforces Round #121 (Div. 2)
4 P4 - Vasya and Digital Root Codeforces Codeforces Round #206 (Div. 2)
5 P5 - Levko and Table Codeforces Codeforces Round #210 (Div. 2)
6 P6 - DZY Loves Chessboard Codeforces Codeforces Round #254 (Div. 2)
7 P7 - Fox and Number Game Codeforces Codeforces Round #228 (Div. 2)
8 P8 - Fedor and New Game Codeforces Codeforces Round #267 (Div. 2)
9 P9 - OR in Matrix Codeforces Codeforces Round #277 (Div. 2)
10 P10 - Planning The Expedition Codeforces Codeforces Round #499 (Div. 2)
11 P11 - Burning Midnight Oil Codeforces Codeforces Round #112 (Div. 2)
12 P12 - Summarize to the Power of Two Codeforces Codeforces Round #496 (Div. 3)
13 P13 - Delete from the Left Codeforces Codeforces Round #496 (Div. 3)
14 P14 - Tanya and Stairways Codeforces Codeforces Round #496 (Div. 3)
15 P15 - Mishka and Contest Codeforces Codeforces Round #490 (Div. 3)
16 P16 - Reversing Encryption Codeforces Codeforces Round #490 (Div. 3)
17 P17 - Alphabetic Removals Codeforces Codeforces Round #490 (Div. 3)
18 P18 - Minimize the error Codeforces Divide by Zero 2018 and Codeforces Round #474 (Div. 1 + Div. 2, combined)
19 P19 - World Cup Codeforces Codeforces Round #492 (Div. 2) [Thanks, uDebug!]
20 P20 - Convert to Ones Codeforces Codeforces Round #493 (Div. 1) & Codeforces Round #493 (Div. 2)
21 P21 - Hit the Lottery Codeforces Codeforces Round #492 (Div. 2) [Thanks, uDebug!]
22 P22 - Getting an A Codeforces Codeforces Round #491 (Div. 2)
23 P23 - Candies Codeforces Codeforces Round #491 (Div. 2)
24 P24 - Diverse Team Codeforces Codeforces Round #486 (Div. 3)
25 P25 - Substrings Sort Codeforces Codeforces Round #486 (Div. 3)
26 P26 - Equal Sums Codeforces Codeforces Round #486 (Div. 3)
27 P27 - Points and Powers of Two Codeforces Codeforces Round #486 (Div. 3)
28 P28 - Remove Duplicates Codeforces Codeforces Round #481 (Div. 3)
29 P29 - File Name Codeforces Codeforces Round #481 (Div. 3)
30 P30 - Letters Codeforces Codeforces Round #481 (Div. 3)
31 P31 - Bus Video System Codeforces Codeforces Round #481 (Div. 3)
32 P32 - Wrong Subtraction Codeforces Codeforces Round #479 (Div. 3)
33 P33 - Two-gram Codeforces Codeforces Round #479 (Div. 3)
34 P34 - Less or Equal Codeforces Codeforces Round #479 (Div. 3)
35 P35 - Divide by three, multiply by two Codeforces Codeforces Round #479 (Div. 3)
36 P36 - Watering System Codeforces Codeforces Round #477 (rated, Div. 2, based on VK Cup 2018 Round 3)
37 P37 - Water The Garden Codeforces Educational Codeforces Round 37 (Rated for Div. 2)
38 P38 - Battleship Codeforces Codeforces Round #476 (Div. 2) [Thanks, Telegram!]
39 P39 - Weird Subtraction Process Codeforces Educational Codeforces Round 39 (Rated for Div. 2)
40 P40 - String Transformation Codeforces Educational Codeforces Round 39 (Rated for Div. 2)