Extra problems for users satisfying this condition: 1800 <= Codeforces Rating <= 1899 (Extra). |
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| ID | Problem Name | Online Judge | Difficulty Level |
|---|---|---|---|
| 1 | George and Accommodation | Codeforces | 1 |
| 2 | Spit Problem | Codeforces | 1 |
| 3 | Sereja and Mugs | Codeforces | 1 |
| 4 | Playing with Dice | Codeforces | 1 |
| 5 | Kyoya and Photobooks | Codeforces | 1 |
| 6 | Haiku | Codeforces | 1 |
| 7 | Soroban | Codeforces | 1 |
| 8 | Table | Codeforces | 2 |
| 9 | Valera and Plates | Codeforces | 2 |
| 10 | Sinking Ship | Codeforces | 2 |
| 11 | Case of the Zeros and Ones | Codeforces | 2 |
| 12 | Drazil and Date | Codeforces | 2 |
| 13 | Bear and Raspberry | Codeforces | 2 |
| 14 | Worms Evolution | Codeforces | 2 |
| 15 | Group of Students | Codeforces | 2 |
| 16 | Lever | Codeforces | 2 |
| 17 | Lucky Ticket | Codeforces | 2 |
| 18 | Game With Sticks | Codeforces | 2 |
| 19 | Depression | Codeforces | 2 |
| 20 | Easter Eggs | Codeforces | 2 |
| 21 | Vasya and Digital Root | Codeforces | 2 |
| 22 | Sereja and Coat Rack | Codeforces | 2 |
| 23 | Multiplication Table | Codeforces | 2 |
| 24 | Canvas Frames | Codeforces | 3 |
| 25 | Petya and Staircases | Codeforces | 3 |
| 26 | Progress Bar | Codeforces | 3 |
| 27 | A and B and Compilation Errors | Codeforces | 3 |
| 28 | Bear and Strings | Codeforces | 3 |
| 29 | Dorm Water Supply | Codeforces | 3 |
| 30 | Permutation | Codeforces | 3 |
| 31 | Appleman and Toastman | Codeforces | 3 |
| 32 | Strings of Power | Codeforces | 3 |
| 33 | Lexicographically Maximum Subsequence | Codeforces | 3 |
| 34 | Whose sentence is it? | Codeforces | 3 |
| 35 | Milking cows | Codeforces | 3 |
| 36 | Sereja and Stairs | Codeforces | 3 |
| 37 | Good Number | Codeforces | 3 |
| 38 | Mashmokh and Numbers | Codeforces | 3 |
| 39 | Fox and Number Game | Codeforces | 3 |
| 40 | Levko and Permutation | Codeforces | 3 |
| 41 | Xor-tree | Codeforces | 3 |
| 42 | Prizes, Prizes, more Prizes | Codeforces | 3 |
| 43 | Find Pair | Codeforces | 4 |
| 44 | Magic Box | Codeforces | 4 |
| 45 | Bits | Codeforces | 4 |
| 46 | History | Codeforces | 4 |
| 47 | Remainders Game | Codeforces | 4 |
| 48 | Guess Your Way Out! | Codeforces | 4 |
| 49 | Guest From the Past | Codeforces | 4 |
| 50 | Magical Boxes | Codeforces | 4 |
| 51 | Prime Permutation | Codeforces | 4 |
| 52 | Yaroslav and Sequence | Codeforces | 4 |
| 53 | Division into Teams | Codeforces | 4 |
| 54 | School Marks | Codeforces | 4 |
| 55 | Prime Swaps | Codeforces | 4 |
| 56 | Cutting Figure | Codeforces | 4 |
| 57 | Vasily the Bear and Sequence | Codeforces | 4 |
| 58 | Alyona and a tree | Codeforces | 4 |
| 59 | Ilya and Sticks | Codeforces | 4 |
| 60 | Heap Operations | Codeforces | 4 |
| 61 | Report | Codeforces | 4 |
| 62 | Bear and Blocks | Codeforces | 4 |
| 63 | Kolya and Tanya | Codeforces | 4 |
| 64 | Bracket Sequence | Codeforces | 4 |
| 65 | Dreamoon and Sets | Codeforces | 4 |
| 66 | Lazy Student | Codeforces | 4 |
| 67 | Olympiad | Codeforces | 4 |
| 68 | The Child and Zoo | Codeforces | 4 |
| 69 | Queue | Codeforces | 4 |
| 70 | Approximating a Constant Range | Codeforces | 4 |
| 71 | Biridian Forest | Codeforces | 4 |
| 72 | Amr and Pins | Codeforces | 4 |
| 73 | Levko and Array Recovery | Codeforces | 4 |
| 74 | Robin Hood | Codeforces | 4 |
| 75 | Quiz | Codeforces | 4 |
| 76 | Polo the Penguin and XOR operation | Codeforces | 4 |
| 77 | Dynasty Puzzles | Codeforces | 4 |
| 78 | k-Multiple Free Set | Codeforces | 4 |
| 79 | Tree Construction | Codeforces | 4 |
| 80 | Misha and Permutations Summation | Codeforces | 4 |
| 81 | Inna and Nine | Codeforces | 4 |
| 82 | Two Substrings | Codeforces | 4 |
| 83 | Alyona and the Tree | Codeforces | 4 |
| 84 | Subsegments | Codeforces | 4 |
| 85 | Toy Sum | Codeforces | 4 |
| 86 | Alice and Bob | Codeforces | 4 |
| 87 | Non-Secret Cypher | Codeforces | 4 |
| 88 | Petya and His Friends | Codeforces | 4 |
| 89 | Alternating Current | Codeforces | 4 |
| 90 | The Big Race | Codeforces | 4 |
| 91 | Cycles | Codeforces | 4 |
| 92 | The Values You Can Make | Codeforces | 4 |
| 93 | Road Map | Codeforces | 4 |
| 94 | Newspaper Headline | Codeforces | 4 |
| 95 | Valera and Contest | Codeforces | 4 |
| 96 | Ivan and Powers of Two | Codeforces | 4 |
| 97 | Polyline | Codeforces | 4 |
| 98 | Inna and Sequence | Codeforces | 4 |
| 99 | Anagram Search | Codeforces | 4 |
| 100 | Chips | Codeforces | 4 |
| 101 | Fish Weight | Codeforces | 4 |
| 102 | Rational Resistance | Codeforces | 4 |
| 103 | Falling Anvils | Codeforces | 4 |
| 104 | Maximal Area Quadrilateral | Codeforces | 4 |
| 105 | Find Maximum | Codeforces | 4 |
| 106 | Jeff and Furik | Codeforces | 4 |
| 107 | Making Sequences is Fun | Codeforces | 4 |
| 108 | Multitasking | Codeforces | 4 |
| 109 | Vasiliy's Multiset | Codeforces | 4 |
| 110 | Woodcutters | Codeforces | 4 |
| 111 | More Cowbell | Codeforces | 4 |
| 112 | Watering Flowers | Codeforces | 4 |
| 113 | Planets | Codeforces | 4 |
| 114 | Zuma | Codeforces | 4 |
| 115 | OR in Matrix | Codeforces | 4 |
| 116 | Divisible by Seven | Codeforces | 4 |
| 117 | Dima and Two Sequences | Codeforces | 4 |
| 118 | Queue | Codeforces | 4 |
| 119 | Dima and Lisa | Codeforces | 4 |
| 120 | Running Track | Codeforces | 5 |
| 121 | Mike and Geometry Problem | Codeforces | 5 |
| 122 | Flawed Flow | Codeforces | 5 |
| 123 | Love Triangles | Codeforces | 5 |
| 124 | Subway Innovation | Codeforces | 5 |
| 125 | Gifts by the List | Codeforces | 5 |
| 126 | Black and White Tree | Codeforces | 5 |
| 127 | Anton and Ira | Codeforces | 5 |
| 128 | Beavermuncher-0xFF | Codeforces | 5 |
| 129 | Last Chance | Codeforces | 5 |
| 130 | Palindromes | Codeforces | 5 |
| 131 | Preparing for the Contest | Codeforces | 5 |
| 132 | Block Tower | Codeforces | 5 |
| 133 | Vladik and cards | Codeforces | 5 |
| 134 | Beautiful Decomposition | Codeforces | 5 |
| 135 | Points on Plane | Codeforces | 5 |
| 136 | Broken Monitor | Codeforces | 5 |
| 137 | Memory and Scores | Codeforces | 5 |
| 138 | Cubes | Codeforces | 5 |
| 139 | Games with Rectangle | Codeforces | 5 |
| 140 | Iahub and Permutations | Codeforces | 5 |
| 141 | Friends and Subsequences | Codeforces | 5 |
| 142 | Insertion Sort | Codeforces | 5 |
| 143 | Vika and Segments | Codeforces | 5 |
| 144 | Persistent Bookcase | Codeforces | 5 |
| 145 | Cycle in Graph | Codeforces | 5 |
| 146 | Apple Tree | Codeforces | 5 |
| 147 | Wizards and Huge Prize | Codeforces | 5 |
| 148 | 3-cycles | Codeforces | 5 |
| 149 | Dima and Containers | Codeforces | 5 |
| 150 | Directed Roads | Codeforces | 5 |
| 151 | Dima and Magic Guitar | Codeforces | 5 |
| 152 | Free Market | Codeforces | 5 |
| 153 | Infinite Maze | Codeforces | 5 |
| 154 | Ilya and Roads | Codeforces | 5 |
| 155 | The Road to Berland is Paved With Good Intentions | Codeforces | 5 |
| 156 | Alyona and Strings | Codeforces | 5 |
| 157 | Messenger | Codeforces | 5 |
| 158 | Police Patrol | Codeforces | 5 |
| 159 | Xenia and Hamming | Codeforces | 5 |
| 160 | Let's Play Osu! | Codeforces | 5 |
| 161 | Happy Tree Party | Codeforces | 5 |
| 162 | Number With The Given Amount Of Divisors | Codeforces | 5 |
| 163 | Shaass and Lights | Codeforces | 5 |
| 164 | Little Elephant and Elections | Codeforces | 5 |
| 165 | Theseus and labyrinth | Codeforces | 5 |
| 166 | Yaroslav and Time | Codeforces | 5 |
| 167 | Rat Kwesh and Cheese | Codeforces | 5 |
| 168 | Minesweeper 1D | Codeforces | 5 |
| 169 | Beard Graph | Codeforces | 5 |
| 170 | Compatible Numbers | Codeforces | 5 |
| 171 | Mishka and Interesting sum | Codeforces | 5 |
| 172 | Vanya and Triangles | Codeforces | 5 |
| 173 | Money Transfers | Codeforces | 5 |
| 174 | Queue | Codeforces | 5 |
| 175 | Inna and Pink Pony | Codeforces | 5 |
| 176 | Fox And Jumping | Codeforces | 5 |
| 177 | Random Task | Codeforces | 5 |
| 178 | Minimization | Codeforces | 5 |
| 179 | Modulo Sum | Codeforces | 5 |
| 180 | Paths and Trees | Codeforces | 5 |
| 181 | Famil Door and Brackets | Codeforces | 5 |
| 182 | Babaei and Birthday Cake | Codeforces | 5 |
| 183 | Wet Shark and Blocks | Codeforces | 5 |
| 184 | Empire Strikes Back | Codeforces | 6 |
| 185 | Vanya and Brackets | Codeforces | 6 |
| 186 | Game with Powers | Codeforces | 6 |
| 187 | Arthur and Brackets | Codeforces | 6 |
| 188 | Anya and Cubes | Codeforces | 6 |
| 189 | Devu and Flowers | Codeforces | 6 |
| 190 | Coin Troubles | Codeforces | 6 |
| 191 | Thwarting Demonstrations | Codeforces | 6 |
| 192 | Yet Another Number Game | Codeforces | 6 |
| 193 | Game on Tree | Codeforces | 6 |
| 194 | Edges in MST | Codeforces | 6 |
| 195 | Trains and Statistic | Codeforces | 6 |
| 196 | Infinite Inversions | Codeforces | 6 |
| 197 | Product Sum | Codeforces | 7 |
| 198 | Axis Walking | Codeforces | 7 |
| 199 | Kefa and Watch | Codeforces | 7 |
| 200 | Optimize! | Codeforces | 8 |