ID Problem
18002 P4758   Mountain Horizon
18003 P4759   Consecutive Sum Representation
18004 P4760   Cogwheel Machine
18005 P4761   Recovering the Three Words
18006 P4762   Synthesize Good Viruses
18007 P4763   Uniform Brick Partition
18008 P4764   Country-wide Highway Infrastructure Planning
18009 P4765   Magic Shoppe Treasure Game
18010 P4766   Alien Invasion Defense
18011 P4767   Minimizing Total Distance to Post Offices
18012 P4768   Minimize Walking Distance in Magic City
18013 P4769   Counting Good Permutations
18014 P4770   Distinct Problem Names
18015 P4771   Northward Mountain Escape
18016 P4772   The Quick Fertilizer Delivery Problem
18017 P4773   Expected Contest Penalty Calculation
18018 P4774   Minimum Global Attack Count
18019 P4775   Intelligence Agency Setup
18020 P4776   Computational Geometry - Hamiltonian Cycles on a Special Graph
18021 P4777   Smallest Nonnegative Integer Solution of Modular Equations
18022 P4778   Counting Minimal Swap Sequences
18023 P4779   Single Source Shortest Path
18024 P4780   Minimum Number Satisfying Euler's Totient Equation
18025 P4781   Polynomial Interpolation
18026 P4782   2-SAT Satisfiability
18027 P4783   Matrix Inversion Modulo 10^9+7
18028 P4784   Connect the Major Cities in Byteland
18029 P4785   Lexicographically Minimum Sequence
18030 P4786   Election
18031 P4787   Minmaxtree
18032 P4788   RGB Readable Parenthesis Strings
18033 P4789   ZalSequence Insertion
18034 P4790   Love Polygon
18035 P4791   Worm Worries
18036 P4792   Martian DNA
18037 P4793   Treasure Hunt on Happy Island
18038 P4794   Alternating Current
18039 P4795   Genetics
18040 P4796   Paths
18041 P4797   Potemkin Cycle
18042 P4798   Calvinball Championship
18043 P4799   Ice Hockey World Championship
18044 P4800   Nuclear Leakage Radiation
18045 P4801   Hungry Fox
18046 P4802   Longest Path
18047 P4803   Solar Flight
18048 P4804   Circle of Life
18049 P4805   Combining Riceballs
18050 P4806   Minimum Cost Flow with Booster
18051 P4807   RMT Subway Simulation
18052 P4808   Balanced Trees
18053 P4809   Maximum Strategic Savings
18054 P4810   STOGOVI - Mirko's Stacks Game
18055 P4811   Trucks on the Road
18056 P4812   Determining Possible Final Rankings in COCI
18057 P4813   Troyangles
18058 P4814   King Gruff
18059 P4815   Werewolf
18060 P4816   Predictable Card Game
18061 P4817   Fruit Feast Problem
18062 P4818   Bessie's Dream Maze
18063 P4819   Identifying the Assassin
18064 P4820   Ant Book Overhang
18065 P4821   Pentagon Circle Spanning Trees
18066 P4822   Fastest Journey with SpellCards
18067 P4823   Dwarfs' Ladder Escape
18068 P4824   Censoring the Magazine Text
18069 P4825   Cow Hopscotch
18070 P4826   Superbull Championship
18071 P4827   Capital Evaluation in Civilization V
18072 P4828   Cyclic Sequence Operation Query
18073 P4829   2048‐Style Block Merging
18074 P4830   Maximizing the Guessing Probability
18075 P4831   Non-attacking Cannons on a Chinese Chessboard
18076 P4832   Maximum Integer Sum from Trigonometric Squares
18077 P4833   Maximum Domain Partition
18078 P4834   Expected Energy Release in an Electric Field
18079 P4835   Optimal Teacher Reassignment
18080 P4838   Valid String Count
18081 P4839   Maximum XOR Sum in Buckets
18082 P4840   Maximal Distinct Palindromic Substrings via Rotation
18083 P4841   Counting Connected Labeled Graphs
18084 P4842   Dynamic Tree Expected Path Sum
18085 P4843   Minimum Helicopter Flights for Slope Cleaning
18086 P4844   Counting Reciprocal Equation Triples
18087 P4845   Optimal Treasure Observation in a Tree
18088 P4846   Harmonious Sequence Operations
18089 P4847   Sequence Operations Query
18090 P4848   2D Range K-th Largest Query
18091 P4849   Treasure Hunt in a 4D Grid
18092 P4850   Chocolate Cutting with Raisins Payment
18093 P4851   Minimum Loveca Usage
18094 P4852   Maximizing Draw Luck in Card Grouping
18095 P4853   Expected Score in Rhythm Game with Card Skills
18096 P4854   Assembling the Salty Fish Tree
18097 P4855   MloVtry's Brain-Pit Idea Exchange
18098 P4856   MloVtry's Elastic Journey
18099 P4857   Infinite Train Ticket Inspection
18100 P4858   Maximum Cover Rectangle
18101 P4859   Pairing Elements to Nullify Attack

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