DIV.1
Div. 1, Problem E
List of random Codeforces problems, all of them are Div. 1 E problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 1 A, B, C and D problems, but might have some difficulties while solving the C problems.
PROBLEM TYPE E
PROBLEMS 100
PROGRESS
Your Statistics
SOLVED
COMPLETION 0 / 100
PROBLEM SET
All Problems
SHOW/HIDE
RATING RANGE
—
SORT BY RATING
FILTER BY TAG
| # | PROBLEM | RATING | DIFFICULTY | TAGS | STATUS |
|---|---|---|---|---|---|
| 01 | Jeff and Permutation | LVL 5 | greedy | | |
| 02 | Lucky Number Representation | LVL 5 | constructive algorithmsdfs and similardp | | |
| 03 | Lucky Queries | LVL 6 | data structures | | |
| 04 | Little Elephant and Inversions | LVL 7 | data structurestwo pointers | | |
| 05 | Little Elephant and Tree | LVL 7 | data structuresdfs and similartrees | | |
| 06 | Lucky Array | LVL 7 | data structures | | |
| 07 | Lucky Country | LVL 7 | dpdsugraphs | | |
| 08 | Ciel and Gondolas | LVL 8 | data structuresdivide and conquerdp | | |
| 09 | Lucky Arrays | LVL 7 | data structures | | |
| 10 | Gifts | LVL 9 | combinatoricsdpmath +1 | | |
| 11 | Sign on Fence | LVL 8 | binary searchconstructive algorithmsdata structures | | |
| 12 | Gripping Story | LVL 7 | binary searchdata structuressortings | | |
| 13 | Opening Portals | LVL 7 | dsugraphsshortest paths | | |
| 14 | Optimize! | LVL 8 | data structures | | |
| 15 | Sereja and Sets | LVL 7 | dp | | |
| 16 | Little Elephant and Strings | LVL 9 | data structuresimplementationstring suffix structures +1 | | |
| 17 | Lostborn | LVL 8 | dpmathnumber theory | | |
| 18 | Bits of merry old England | LVL 9 | flowsgraphs | | |
| 19 | Igloo Skyscraper | LVL 7 | data structuresgeometry | | |
| 20 | Vowels | LVL 8 | combinatoricsdivide and conquerdp | | |
| 21 | Cow Tennis Tournament | LVL 9 | combinatoricsdata structuresmath | | |
| 22 | Thoroughly Bureaucratic Organization | LVL 7 | binary searchcombinatorics | | |
| 23 | Candies and Stones | LVL 8 | divide and conquerdp | | |
| 24 | Sereja and Intervals | LVL 8 | combinatoricsdp | | |
| 25 | Ladies' Shop | LVL 9 | constructive algorithmsfftmath | | |
| 26 | Martian Food | LVL 8 | geometry | | |
| 27 | Buying Sets | LVL 10 | flowsgraph matchings | | |
| 28 | Wizards and Bets | LVL 8 | dfs and similargraphsmath +1 | | |
| 29 | Maxim and Calculator | LVL 9 | brute forcedptwo pointers | | |
| 30 | Stairs and Lines | LVL 8 | dpmatrices | | |
| 31 | Maze | LVL 8 | dfs and similardpprobabilities +1 | | |
| 32 | Alien DNA | LVL 9 | data structuresdsutrees | | |
| 33 | Number Challenge | LVL 8 | combinatoricsdpimplementation +2 | | |
| 34 | Fibonacci Number | LVL 9 | brute forcemathmatrices | | |
| 35 | Noble Knight's Path | LVL 10 | data structurestrees | | |
| 36 | Biologist | LVL 8 | flows | | |
| 37 | Polo the Penguin and Lucky Numbers | LVL 9 | dpimplementationmath | | |
| 38 | Dima and Game | LVL 8 | dpgames | | |
| 39 | Candies Game | LVL 9 | constructive algorithmsgreedy | | |
| 40 | Endless Matrix | LVL 7 | math | | |
| 41 | Freezing with Style | LVL 10 | binary searchdata structuresdivide and conquer +1 | | |
| 42 | Road Repairs | LVL 9 | dfs and similargraphsgreedy | | |
| 43 | Weak Subsequence | LVL 9 | combinatorics | | |
| 44 | Sereja and Squares | LVL 9 | dp | | |
| 45 | Levko and Game | LVL 9 | graphsgreedyshortest paths | | |
| 46 | Ping-Pong | LVL 10 | data structures | | |
| 47 | Function | LVL 9 | data structures | | |
| 48 | Quick Tortoise | LVL 9 | bitmasksdivide and conquerdp | | |
| 49 | Pilgrims | LVL 9 | dfs and similardptrees | | |
| 50 | The Classic Problem | LVL 9 | data structuresgraphsshortest paths | | |
| 51 | Meeting Her | LVL 9 | dpgraphsshortest paths | | |
| 52 | Mystic Carvings | LVL 9 | data structures | | |
| 53 | Yaroslav and Arrangements | LVL 9 | dp | | |
| 54 | Jzzhu and Squares | LVL 9 | dpmathnumber theory | | |
| 55 | Roadside Trees | LVL 9 | data structuresdp | | |
| 56 | Appleman and a Game | LVL 9 | binary searchshortest pathsstrings | | |
| 57 | Parking Lot | LVL 9 | data structuresdivide and conquer | | |
| 58 | Cookie Clicker | LVL 9 | dpgeometry | | |
| 59 | Doodle Jump | LVL 10 | mathnumber theory | | |
| 60 | Xenia and String Problem | LVL 10 | dphashingimplementation +2 | | |
| 61 | Mogohu-Rea Idol | LVL 8 | geometry | | |
| 62 | Random Ranking | LVL 10 | dpmathprobabilities | | |
| 63 | Empty Rectangles | LVL 9 | divide and conquertwo pointers | | |
| 64 | Mirror Room | LVL 10 | data structuresimplementation | | |
| 65 | Little Pony and Lord Tirek | LVL 9 | data structures | | |
| 66 | k-d-sequence | LVL 10 | data structures | | |
| 67 | Drawing Circles is Fun | LVL 9 | combinatoricsgeometry | | |
| 68 | Fox And Polygon | LVL 8 | constructive algorithmsdivide and conquer | | |
| 69 | Evil | LVL 10 | math | | |
| 70 | Darts | LVL 9 | geometryprobabilities | | |
| 71 | Subsequences Return | LVL 9 | dpmatrices | | |
| 72 | Red and Black Tree | LVL 10 | dpimplementationmath | | |
| 73 | The Child and Binary Tree | LVL 10 | combinatoricsdivide and conquerfft +1 | | |
| 74 | Sequence Transformation | LVL 10 | brute forcedata structuresdp +2 | | |
| 75 | Gena and Second Distance | LVL 9 | geometry | | |
| 76 | Two Rooted Trees | LVL 9 | data structuresimplementationtrees | | |
| 77 | Matrix | LVL 9 | data structures | | |
| 78 | Planar Graph | LVL 10 | flowsgeometrygraphs | | |
| 79 | Misha and LCP on Tree | LVL 9 | binary searchdfs and similarhashing +2 | | |
| 80 | Sleeping | LVL 8 | combinatoricsimplementationmath | | |
| 81 | String Theory | LVL 10 | geometrymathstrings | | |
| 82 | Martian Colony | LVL 10 | geometry | | |
| 83 | Birthday | LVL 10 | geometrymath | | |
| 84 | Sharti | LVL 8 | data structuresgames | | |
| 85 | Tourists | LVL 9 | data structuresdfs and similargraphs +1 | | |
| 86 | Furukawa Nagisa's Tree | LVL 9 | binary searchdivide and conquersortings +1 | | |
| 87 | ELCA | LVL 10 | data structurestrees | | |
| 88 | Lucky Interval | LVL 10 | brute forcemath | | |
| 89 | On Iteration of One Well-Known Function | LVL 10 | math | | |
| 90 | Soap Time! - 2 | LVL 9 | binary searchdata structures | | |
| 91 | Mashmokh's Designed Problem | LVL 10 | data structures | | |
| 92 | Fox and Meteor Shower | LVL 10 | geometry | | |
| 93 | Heaven Tour | LVL 9 | data structuresgreedy | | |
| 94 | Fire and Ice | LVL 10 | greedy | | |
| 95 | Pills | LVL 10 | brute forceflows | | |
| 96 | Dreamoon and Notepad | LVL 10 | data structures | | |
| 97 | Sorting Permutations | LVL 10 | | | |
| 98 | Help Greg the Dwarf 2 | LVL 10 | geometry | | |
| 99 | Petya and Rectangle | LVL 10 | | | |
| 100 | Permanent | LVL 9 | dpgraph matchingsmath +1 | |
ANALYTICS
Quick Stats
≤ GRANDMASTER
17
PROBLEMS INT. GRANDMASTER
46
PROBLEMS LEGENDARY GM
37
PROBLEMS ≥ LEGENDARY GM
37
PROBLEMS