Problem Set - OpenJudge

	ID	Problem
	504	D612 Merge Equal Elements
	505	D613 Chladni Figure
	506	D614 The Number Games
	507	D615 Paper-Scissors Champion
	508	D616 Polygons
	509	D617 Strange Functions
	510	D618 Berserk Robot
	511	D619 Rotate Columns (easy version)
	512	D620 Little Elephant and Cards
	513	D621 The Contest
	514	D622 Bear and Chemistry
	515	D623 Bus Game
	516	D624 Ropeway
	517	D631 Energy exchange
	518	D632 Community Integration
	519	D633 Wire
	520	D634 Seven Segments
	521	D635 Jzzhu and Apples
	522	D636 Chattering
	523	D637 TV Watching
	524	D638 Balls and Pockets
	525	D639 Similar Arrays
	526	D640 Magic Squares
	527	D641 Reality Show
	528	D642 Circles and Ray
	529	D643 Ruins
	530	D644 Minimum Sum
	531	D645 Misha and XOR
	532	D646 Range Search (kD Tree)
	533	D647 Binary String Minimizing
	534	D648 Little Elephant and Problem
	535	D649 Celex Update
	536	D650 Generating Sets
	537	D651 Distinctive Roots in a Tree
	538	D652 Tree
	539	D653 Strange Table
	540	D654 Expression
	541	D655 Walking in JOI Kingdom
	542	D656 Arthur and Questions
	543	D657 The Shortest Statement
	544	D658 Zoning Restrictions
	545	D659 Bmail Computer Network
	546	D660 Tower of JOIOI
	547	D661 New Year Present
	548	D662 Permutations
	549	D663 Programming Language
	550	D664 Collective Mindsets (easy)
	551	D665 Kaiden
	552	D666 String Reconstruction
	553	D667 Brave CHAIN
	554	D668 Pairs of Pairs
	555	D669 Digit Game
	556	D670 Constrained Tree
	557	D671 13th Labour of Heracles
	558	D672 Cards Sorting
	559	D673 Dreamoon Likes Sequences
	560	D674 Maximal Area Quadrilateral
	561	D675 Favorite Sound
	562	D676 Longest Palindrome
	563	D677 Slava and tanks
	564	D678 Milking cows
	565	D679 AA Graph
	566	D680 Remaining Balls
	567	D681 Three Arrays
	568	D682 Sky Full of Stars
	569	D683 Paired Parentheses
	570	D684 Magic Squares
	571	D685 Tournament
	572	D686 Ivan the Fool VS Gorynych the Dragon
	573	D687 Ghost Buster!
	574	D688 String Set Queries
	575	D689 Stable Sort
	576	D690 Refactoring
	577	D691 Assigning Fares
	578	D702 Dispute
	579	D703 Candy Distribution Again
	580	D704 Min Product Sum
	581	D705 Mike and Friends
	582	D706 Enlarge GCD
	583	D707 GCD and MST
	584	D708 Company
	585	D709 Bracket Substring
	586	D710 Pairs
	587	D711 Cookies
	588	D712 White and Blue
	589	D713 Unplanned Queries
	590	D714 Coder
	591	D715 Rebranding
	592	D716 New Year Snowflake
	593	D717 Codeforces Subsequences
	594	D718 Sequence
	595	D719 Stable Groups
	596	D720 Social Network (hard version)
	597	D721 Compressed Formula
	598	D722 Water Distribution
	599	D723 Putting Boxes Together
	600	D724 Polycarpus' Dice
	601	D725 Write The Contest
	602	D726 Rooted Tree Game
	603	D727 Double Landscape

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