Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	8531	P262A Roma and Lucky Numbers implementation *800	0 / 0	3
	8530	P262B Roma and Changing Signs greedy *1200	0 / 0	4
	8529	P263A Beautiful Matrix implementation *800	0 / 0	3
	8528	P263B Squares greedy implementation sortings *900	0 / 0	3
	8527	P263C Circle of Numbers brute force dfs and similar implementation *2000	0 / 0	7
	8526	P263D Cycle in Graph dfs and similar graphs *1800	0 / 0	6
	8525	P263E Rhombus brute force data structures dp *2500	0 / 0	9
	8524	P264A Escape from Stones constructive algorithms data structures implementation two pointers *1200	0 / 0	4
	8523	P264B Good Sequences dp number theory *1500	0 / 0	5
	8522	P264C Choosing Balls dp *2000	0 / 0	7
	8521	P264D Colorful Stones dp two pointers *2500	0 / 0	9
	8520	P264E Roadside Trees data structures dp *3000	0 / 0	10
	8519	P265A Colorful Stones (Simplified Edition) implementation *800	0 / 0	3
	8518	P265B Roadside Trees (Simplified Edition) greedy implementation *1000	0 / 0	3
	8517	P266A Stones on the Table implementation *800	0 / 0	3
	8516	P266B Queue at the School constructive algorithms graph matchings implementation shortest paths *800	0 / 0	3
	8515	P266C Below the Diagonal constructive algorithms greedy math *2100	0 / 0	7
	8514	P266D BerDonalds graphs math shortest paths *2400	0 / 0	9
	8513	P266E More Queries to Array... data structures math *2500	0 / 0	9
	8512	P267A Subtractions math number theory *900	0 / 0	3
	8511	P267B Dominoes dfs and similar graphs *2000	0 / 0	7
	8510	P267C Berland Traffic math matrices *2700	0 / 0	10
	8509	P268A Games brute force *800	0 / 0	3
	8508	P268B Buttons implementation math *1000	0 / 0	3
	8507	P268C Beautiful Sets of Points constructive algorithms implementation *1500	0 / 0	5
	8506	P268D Wall Bars dp *2300	0 / 0	8
	8505	P268E Playlist math probabilities sortings *2100	0 / 0	7
	8504	P269A Magical Boxes greedy math *1600	0 / 0	5
	8503	P269B Greenhouse Effect dp *1700	0 / 0	5
	8502	P269C Flawed Flow constructive algorithms flows graphs greedy *2100	0 / 0	7
	8501	P269D Maximum Waterfall data structures dp graphs sortings *2600	0 / 0	10
	8500	P269E String Theory geometry math strings *3100	0 / 0	10
	8499	P270A Fancy Fence geometry implementation math *1100	0 / 0	3
	8498	P270B Multithreading data structures greedy implementation *1400	0 / 0	4
	8497	P271A Beautiful Year brute force *800	0 / 0	3
	8496	P271B Prime Matrix binary search brute force math number theory *1300	0 / 0	4
	8495	P271C Secret constructive algorithms implementation *1500	0 / 0	5
	8494	P271D Good Substrings data structures strings *1800	0 / 0	6
	8493	P271E Three Horses constructive algorithms math number theory *2200	0 / 0	8
	8492	P272A Dima and Friends implementation math *1000	0 / 0	3
	8491	P272B Dima and Sequence implementation math *1400	0 / 0	4
	8490	P272C Dima and Staircase data structures implementation *1500	0 / 0	5
	8489	P272D Dima and Two Sequences combinatorics math sortings *1600	0 / 0	5
	8488	P272E Dima and Horses combinatorics constructive algorithms graphs *2200	0 / 0	8
	8487	P273D Dima and Figure dp *2400	0 / 0	9
	8486	P273E Dima and Game dp games *2600	0 / 0	10
	8485	P274A k-Multiple Free Set binary search greedy sortings *1500	0 / 0	5
	8484	P274B Zero Tree dfs and similar dp greedy trees *1800	2 / 5	6
	8483	P274C The Last Hole! brute force geometry *2600	0 / 0	10
	8482	P274D Lovely Matrix dfs and similar graphs greedy sortings *2200	0 / 0	8
	8481	P274E Mirror Room data structures implementation *3000	0 / 0	10
	8480	P275A Lights Out implementation *900	0 / 0	3
	8479	P275B Convex Shape constructive algorithms implementation *1700	0 / 0	5
	8478	P276A Lunch Rush implementation *900	0 / 0	3
	8477	P276B Little Girl and Game games greedy *1300	0 / 0	4
	8476	P276C Little Girl and Maximum Sum data structures greedy implementation sortings *1500	0 / 0	5
	8475	P276D Little Girl and Maximum XOR bitmasks dp greedy implementation math *1700	0 / 0	5
	8474	P276E Little Girl and Problem on Trees data structures graphs trees *2100	1 / 1	7
	8473	P277A Learning Languages dfs and similar dsu *1400	0 / 0	4
	8472	P277B Set of Points constructive algorithms geometry *2300	0 / 0	8
	8471	P277C Game games implementation *2400	0 / 0	9
	8470	P277D Google Code Jam dp probabilities *2800	0 / 0	10
	8469	P277E Binary Tree on Plane flows trees *2400	0 / 0	9
	8468	P278A Circle Line implementation *800	0 / 0	3
	8467	P278B New Problem brute force strings *1500	0 / 0	5
	8466	P279A Point on Spiral brute force geometry implementation *1400	0 / 0	4
	8465	P279B Books binary search brute force implementation two pointers *1400	0 / 0	4
	8464	P279C Ladder dp implementation two pointers *1700	0 / 0	5
	8463	P279D The Minimum Number of Variables bitmasks dp *2200	0 / 0	8
	8462	P279E Beautiful Decomposition dp games greedy number theory *1900	0 / 0	6
	8461	P280A Rectangle Puzzle geometry *2000	0 / 0	7
	8460	P280B Maximum Xor Secondary data structures implementation two pointers *1800	0 / 0	6
	8459	P280C Game on Tree implementation math probabilities trees *2200	0 / 0	8
	8458	P280D k-Maximum Subsequence Sum data structures flows graphs implementation *2800	0 / 0	10
	8457	P280E Sequence Transformation brute force data structures dp implementation math *3000	0 / 0	10
	8456	P281A Word Capitalization implementation strings *800	0 / 0	3
	8455	P281B Nearest Fraction brute force implementation two pointers *1700	0 / 0	5
	8454	P282A Bit++ implementation *800	0 / 0	3
	8453	P282B Painting Eggs greedy math *1500	0 / 0	5
	8452	P282C XOR and OR constructive algorithms implementation math *1500	0 / 0	5
	8451	P282D Yet Another Number Game dp games *2100	0 / 0	7
	8450	P282E Sausage Maximization bitmasks data structures trees *2200	0 / 0	8
	8449	P283A Cows and Sequence constructive algorithms data structures implementation *1600	0 / 0	5
	8448	P283B Cow Program dfs and similar dp graphs *1700	0 / 0	5
	8447	P283C Coin Troubles dp *2100	0 / 0	7
	8446	P283D Cows and Cool Sequences dp math number theory *2400	0 / 0	9
	8445	P283E Cow Tennis Tournament combinatorics data structures math *2800	0 / 0	10
	8444	P284A Cows and Primitive Roots implementation math number theory *1400	0 / 0	4
	8443	P284B Cows and Poker Game brute force implementation *1000	0 / 0	3
	8442	P285A Slightly Decreasing Permutations greedy implementation *1100	0 / 0	3
	8441	P285B Find Marble implementation *1200	0 / 0	4
	8440	P285C Building Permutation greedy implementation sortings *1200	0 / 0	4
	8439	P285D Permutation Sum bitmasks combinatorics dp implementation meet-in-the-middle *1900	0 / 0	6
	8438	P285E Positions in Permutations combinatorics dp math *2600	0 / 0	10
	8437	P286A Lucky Permutation constructive algorithms math *1400	0 / 0	4
	8436	P286B Shifting implementation *2200	0 / 0	8
	8435	P286C Main Sequence greedy implementation *2100	0 / 0	7
	8434	P286D Tourists data structures sortings *2600	0 / 0	10
	8433	P286E Ladies' Shop constructive algorithms fft math *2800	0 / 0	10
	8432	P287A IQ Test brute force implementation *1100	0 / 0	3

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