Volume 121 (12,100-12,199)

Problem ID Title Solution by Most Popular Input by
12100 Printer Queue
12101 Prime Path
12102 Lineland's Airport
12103 Leonardo's Notebook
12104 A Rod in a Path
12105 Bigger is Better
12106 Collapse!
12107 Digit Puzzle
12108 Extraordinarily Tired Students
12109 Fairies' Defence
12110 Gargoyle
12111 Hidden Music Score
12112 Iceman
12113 Overlapping Squares
12114 Bachelor Arithmetic
12115 Nested Squares
12116 The Dumb Grocer
12117 ACM Puzzles
12118 Inspector's Dilemma
12119 The Bells are Ringing
12120 Photographic Tour
12121 You Are Around Me
12122 Infinite Matrix
12123 Magnetic Train Tracks
12124 Assemble
12125 March of the Penguins
12126 Containers (2)
12127 Youth Hostel Dorm
12128 Escape from Enemy Territory
12129 Flight Safety
12130 Summits
12131 Obfuscation
12132 Tower Parking
12133 Walk (2)
12134 Find the Format String
12135 Switch Bulbs
12136 Schedule of a Married Man
12137 Puzzles of Triangles
12138 Chemical Plant
12139 Clicking Checkboxes
12140 Magic Rings
12141 Line Chart
12142 Mobile Tower
12143 Stopping Doom's Day
12144 Almost Shortest Path
12145 Bases
12146 Candy (2)
12147 DNA Subsequences
12148 Electricity
12149 Feynman
12150 Pole Position
12151 Higgs Boson
12152 Traveling Shoemaker Problem
12153 Bora Bora
12154 Shrinking Polygons
12155 ASCII Diamonds
12156 Match Maker
12157 Tariff Plan
12158 Irreducible Fractions
12159 Gun Fight
12160 Unlock the Lock
12161 Ironman Race in Treeland
12162 Shooting the Monster
12163 Addition-Subtraction Game
12164 The Great Game
12165 Triangle Hazard
12166 Equilibrium Mobile
12167 Proving Equivalences
12168 Cat vs. Dog
12169 Disgruntled Judge
12170 Easy Climb
12171 Sculpture
12172 Matchsticks
12173 White Water Rafting
12174 Shuffle (2)
12175 Videopoker
12176 Bring Your Own Horse
12177 First Knight
12178 Postal Charges
12179 Randomly-Priced Tickets
12180 The Game (2)
12181 The Merchant Guild
12182 Toll Road
12183 Top Secret
12184 Transcribed Books
12185 Wizards
12186 Another Crisis
12187 Brothers
12188 Code Lock
12189 Dinner Hall
12190 Electric Bill
12191 File Recover
12192 Grapevine
12193 Hooligan
12194 Isosceles Triangles (1)
12195 Jingle Composing
12196 Klingon Levels
12197 Trick or Treat
12198 Working at the Restaurant
12199 Lights