Volume 125 (12,500-12,599)

Problem ID Title Solution by Most Popular Input by
12500 Balance the Blocks
12501 Bulky Process of Bulk Reduction
12502 Three Families
12503 Robot Instructions
12504 Updating a Dictionary
12505 Searching in sqrt(n)
12506 Shortest Names
12507 Kingdoms
12508 Triangles in the Grid
12509 Tin Cutter II
12510 Collecting Coins
12511 Virus
12512 Cross-Shaped Tests
12513 Safe Places
12514 Cookie
12515 Movie Police
12516 Cinema-Cola
12517 Digit Sum
12518 LCD Extravaganza
12519 The Farnsworth Parabox
12520 Square Garden
12521 Teamface
12522 The Imperial Problem
12523 Lazy Professor
12524 Arranging Heaps
12525 Boxes and Stones
12526 Cellphone Typing
12527 Different Digits (2)
12528 Environment Protection
12529 Fix the Pond
12530 Game of Tiles
12531 Hours and Minutes
12532 Interval Product
12533 Joining Couples
12534 Binary Matrix 2
12535 Probability Through Experiments
12536 Optimal Spaceway
12537 Radiation
12538 Version Controlled IDE
12539 Ultimate Device
12540 Warp Speed II
12541 Birthdates
12542 Prime Substring
12543 Longest Word
12544 Beehives
12545 Bits Equalizer
12546 LCM Pair Sum
12547 RNA Secondary Structure
12548 Old School Days
12549 Sentry Robots
12550 How Do Spiders Walk on Water?
12551 Shares
12552 The Moon of Valencia
12553 Countdown
12554 A Special "[H]appy Birthday" Song!
12555 B[a]by Me
12556 "Center" of Perimeter Midpoints
12557 Detecting Code Snippets
12558 Egyptian Fractions (HARD Version)
12559 Finding Black Circles
12560 Good Friends
12561 Hadamard Gate
12562 In an Effort to Change History
12563 Jin Ge Jin Qu [h]ao
12564 King of Fighters Explaine[d]
12565 Lovely Magical Curves
12566 Melody "Creation"
12567 Never7, Ever17 and Water
12568 Optimizing Key Signatur
12569 Planning Mobile Robot on Tree (EASY Version)
12570 Qualle? Quale?
12571 Brother & Sisters!
12572 RMQ Overkill
12573 Sohel Sir's Assignment
12574 VOID
12575 Sin Cos Problem
12576 Simply Loopy
12577 Hajj-e-Akbar
12578 10:6:2
12579 To Infinity and Beyond
12580 Yell Classico
12581 Divisibility (2)
12582 Wedding of Sultan
12583 Memory Overflow
12584 Laptop Chargers
12585 Poker End Games
12586 Overlapping Characters
12587 Reduce the Maintenance Cost
12588 Team Mathematics Olympiad
12589 Learning Vector
12590 Guards II
12591 Beauty of Regular Polyhedron
12592 Slogan Learning Of Princess
12593 Next Generation Macaw
12594 Naming Babies
12595 Galactic Transmission
12596 Recursive Texting
12597 Macaw Baby Learns Computer
12598 Starting School
12599 Black and White