Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	2501	P3441 [POI 2006] MET-Subway 贪心 2006 POI	0 / 0	6
	2502	P3442 [POI 2006] NAJ-The Invasion 2006 POI 凸包	0 / 0	6
	2503	P3443 [POI 2006] LIS-The Postman 2006 POI Special Judge 欧拉回路	0 / 0	6
	2504	P3444 [POI 2006] ORK-Ploughing 2006 POI	0 / 0	6
	2505	P3445 [POI 2006] TAN-Dancing in Circles 2006 POI	0 / 0	6
	2506	P3446 [POI 2006] EST-Aesthetic Text 2006 POI	0 / 0	6
	2507	P3447 [POI 2006] KRY-Crystals 2006 POI	0 / 0	6
	2508	P3448 [POI 2006] MIS-Teddies 2006 POI	0 / 0	4
	2509	P3449 [POI 2006] PAL-Palindromes 2006 POI 哈希,HASH 字典树,Trie	0 / 0	6
	2510	P3450 [POI 2006] ZOS-Sophie 2006 POI	0 / 0	(None)
	2511	P3451 [POI 2007] ATR-Tourist Attractions 动态规划,dp 2007 POI O2优化状态压缩最短路	0 / 0	6
	2512	P3452 [POI 2007] BIU-Offices 2007 线性数据结构 POI 深度优先搜索,DFS	2 / 12	5
	2513	P3453 [POI 2007] DRZ-Trees 2007 线段树 POI	0 / 0	6
	2514	P3454 [POI 2007] OSI-Axes of Symmetry 字符串计算几何 2007 POI KMP	0 / 0	6
	2515	P3455 [POI 2007] ZAP-Queries 2007 POI 最大公约数,gcd 莫比乌斯反演	1 / 1	5
	2516	P3456 [POI 2007] GRZ-Ridges and Valleys 2007 POI 广度优先搜索,BFS	0 / 0	4
	2517	P3457 [POI 2007] POW-The Flood 贪心 2007 并查集 POI	0 / 0	6
	2518	P3458 [POI 2007] SKA-Rock Garden 2007 POI 枚举	0 / 0	6
	2519	P3459 [POI 2007] MEG-Megalopolis 2007 线段树树状数组 POI 深度优先搜索,DFS 栈	0 / 0	5
	2520	P3460 [POI 2007] TET-Tetris Attack 贪心 2007 树状数组 POI Special Judge 栈	0 / 0	6
	2521	P3461 [POI 2007] KOL-Railway 2007 POI Special Judge	0 / 0	(None)
	2522	P3462 [POI 2007] ODW-Weights 搜索贪心 2007 POI 进制	0 / 0	6
	2523	P3463 [POI 2007] EGZ-Driving Exam 动态规划,dp 2007 POI	0 / 0	5
	2524	P3464 [POI 2007] WAG-Quaternary Balance 动态规划,dp 2007 POI 进制	0 / 2	6
	2525	P3465 [POI 2008] CLO-Toll 2008 并查集 POI Special Judge	0 / 0	5
	2526	P3466 [POI 2008] KLO-Building blocks 2008 平衡树 POI Special Judge	0 / 0	5
	2527	P3467 [POI 2008] PLA-Postering 2008 POI 栈	0 / 0	3
	2528	P3468 [POI 2008] ROB-Robinson 2008 POI	0 / 0	6
	2529	P3469 [POI 2008] BLO-Blockade 2008 POI Tarjan 割点	0 / 0	5
	2530	P3470 [POI 2008] BBB-BBB 2008 单调队列 POI	0 / 0	6
	2531	P3471 [POI 2008] POC-Trains 2008 平衡树 POI 离散化哈希,HASH	0 / 0	6
	2532	P3472 [POI 2008] MAF-Mafia 贪心 2008 POI	0 / 0	6
	2533	P3473 [POI 2008] UCI-The Great Escape 动态规划,dp 2008 POI	0 / 0	6
	2534	P3474 [POI 2008] KUP-Plot purchase 贪心 2008 单调队列 POI Special Judge	0 / 0	6
	2535	P3475 [POI 2008] POD-Subdivision of Kingdom 动态规划,dp 2008 POI Special Judge 深度优先搜索,DFS 状态压缩	0 / 0	5
	2536	P3476 [POI 2008] TRO-Triangles 计算几何 2008 POI 深度优先搜索,DFS 叉积	0 / 0	6
	2537	P3477 [POI 2008] PER-Permutation 2008 POI	0 / 0	6
	2538	P3478 [POI 2008] STA-Station 动态规划,dp 树形数据结构 2008 POI Special Judge O2优化	7 / 23	4
	2539	P3479 [POI 2009] GAS-Fire Extinguishers 贪心 2009 POI	0 / 0	6
	2540	P3480 [POI 2009] KAM-Pebbles 博弈论 2009 POI	0 / 0	6
	2541	P3481 [POI 2009] PRZ-Algorithm Speedup 2009 POI	0 / 0	6
	2542	P3482 [POI 2009] SLO-Elephants 2009 POI 置换	0 / 0	6
	2543	P3483 [POI 2009] STR-Fire Brigade 2009 树状数组 POI	0 / 0	(None)
	2544	P3484 [POI 2009] WYS-Isles in a Triangular Grid 2009 POI	0 / 0	(None)
	2545	P3485 [POI 2009] BAJ-The Walk of Bytie-boy 动态规划,dp 2009 POI Special Judge 广度优先搜索,BFS	0 / 0	6
	2546	P3486 [POI 2009] KON-Ticket Inspector 动态规划,dp 2009 POI	0 / 0	5
	2547	P3487 [POI 2009] ARC-Architects 2009 单调队列 POI	0 / 0	5
	2548	P3488 [POI 2009] LYZ-Ice Skates 2009 线段树 POI	0 / 0	6
	2549	P3489 [POI 2009] WIE-Hexer 动态规划,dp 2009 POI 最短路	0 / 0	5
	2550	P3490 [POI 2009] FIB-Words 2 2009 POI	0 / 0	(None)
	2551	P3491 [POI 2009] SLW-Words 2009 POI 枚举	0 / 0	5
	2552	P3492 [POI 2009] TAB-Arrays 模拟 2009 POI	0 / 0	5
	2553	P3493 [POI 2009] WSP-Island 计算几何 2009 POI Special Judge 半平面交	0 / 0	6
	2554	P3494 [POI 2009] KOD-The Code 2009 POI 深度优先搜索,DFS	0 / 0	(None)
	2555	P3496 [POI 2010] GIL-Guilds 搜索贪心 2010 POI Special Judge 广度优先搜索,BFS	0 / 0	4
	2556	P3497 [POI 2010] KOL-Railway 2010 线段树 POI	0 / 0	6
	2557	P3498 [POI 2010] KOR-Beads 2010 POI Special Judge 枚举哈希,HASH	0 / 0	5
	2558	P3499 [POI 2010] NAJ-Divine Divisor 数学 2010 POI 素数判断,质数,筛法	0 / 0	6
	2559	P3500 [POI 2010] TES-Intelligence Test 模拟 2010 二分 POI	0 / 0	5
	2560	P3501 [POI 2010] ANT-Antisymmetry 2010 二分 POI 哈希,HASH	0 / 0	5
	2561	P3502 [POI 2010] CHO-Hamsters 图论 2010 POI 矩阵加速,矩阵优化	0 / 0	6
	2562	P3503 [POI 2010] KLO-Blocks 2010 二分 POI 前缀和	0 / 0	5
	2563	P3504 [POI 2010] OWC-Sheep 动态规划,dp 2010 POI	0 / 0	6
	2564	P3505 [POI 2010] TEL-Teleportation 2010 POI	0 / 0	6
	2565	P3506 [POI 2010] MOT-Monotonicity 2 动态规划,dp 2010 线段树 POI Special Judge	0 / 0	6
	2566	P3507 [POI 2010] GRA-The Minima Game 模拟动态规划,dp 贪心 2010 POI	0 / 0	5
	2567	P3508 [POI 2010] LAT-Lamp 计算几何 2010 线段树 POI	0 / 0	(None)
	2568	P3509 [POI 2010] ZAB-Frog 动态规划,dp 2010 倍增 POI 深度优先搜索,DFS	0 / 0	5
	2569	P3510 [POI 2010] JED-Ones 2010 单调队列 POI 哈希,HASH 级数	0 / 0	(None)
	2570	P3511 [POI 2010] MOS-Bridges 2010 二分 POI Special Judge 欧拉回路最大流	0 / 0	6
	2571	P3512 [POI 2010] PIL-Pilots 2010 单调队列 POI 队列	2 / 14	3
	2572	P3513 [POI 2011] KON-Conspiracy 2011 POI 2-SAT 构造	2 / 3	6
	2573	P3514 [POI 2011] LIZ-Lollipop 2011 线性数据结构 POI Special Judge 前缀和	2 / 2	5
	2574	P3515 [POI 2011] Lightning Conductor 动态规划,dp 2011 POI 凸完全单调性,凸单调栈	0 / 1	6
	2575	P3516 [POI 2011] PRZ-Shift 2011 POI Special Judge	0 / 0	6
	2576	P3517 [POI 2011] WYK-Plot 2011 倍增二分 POI Special Judge	0 / 0	6
	2577	P3518 [POI 2011] SEJ-Strongbox 数学 2011 POI 最大公约数,gcd	0 / 0	5
	2578	P3519 [POI 2011] ROZ-Difference 2011 POI 枚举	0 / 4	5
	2579	P3520 [POI 2011] SMI-Garbage 图论 2011 POI Special Judge 欧拉回路	0 / 0	5
	2580	P3521 [POI 2011] ROT-Tree Rotations 2011 线段树 POI O2优化	1 / 1	5
	2581	P3522 [POI 2011] TEM-Temperature 2011 单调队列 POI 队列	3 / 16	4
	2582	P3523 [POI 2011] DYN-Dynamite 贪心 2011 二分 POI 树形 dp	0 / 0	6
	2583	P3524 [POI 2011] IMP-Party 2011 POI Special Judge 构造	0 / 0	4
	2584	P3525 [POI 2011] INS-Inspection 动态规划,dp 树形数据结构 2011 POI	0 / 0	6
	2585	P3526 [POI 2011] OKR-Periodicity 2011 POI 构造	0 / 0	7
	2586	P3527 [POI 2011] MET-Meteors 2011 二分树状数组 POI O2优化整体二分	0 / 0	6
	2587	P3528 [POI 2011] PAT-Sticks 贪心 2011 POI Special Judge 枚举	0 / 0	5
	2588	P3529 [POI 2011] PRO-Programming Contest 2011 POI Special Judge 费用流	0 / 0	6
	2589	P3530 [POI 2012] FES-Festival 2012 POI Tarjan 差分约束	0 / 0	6
	2590	P3531 [POI 2012] LIT-Letters 2012 树状数组 POI O2优化	0 / 0	5
	2591	P3532 [POI 2012] ODL-Distance 数学 2012 POI 枚举	0 / 0	6
	2592	P3533 [POI 2012] RAN-Rendezvous 2012 倍增 POI 最近公共祖先,LCA	0 / 0	6
	2593	P3534 [POI 2012] STU-Well 2012 二分 POI	0 / 0	6
	2594	P3535 [POI 2012] TOU-Tour de Byteotia 贪心 2012 并查集 POI	0 / 0	4
	2595	P3536 [POI 2012] BON-Vouchers 数学 2012 POI	0 / 0	5
	2596	P3537 [POI 2012] SZA-Cloakroom 动态规划,dp 递推 2012 POI	0 / 0	5
	2597	P3538 [POI 2012] OKR-A Horrible Poem 字符串 2012 POI 哈希,HASH	1 / 1	5
	2598	P3539 [POI 2012] ROZ-Fibonacci Representation 贪心 2012 POI	0 / 0	6
	2599	P3540 [POI 2012] SQU-Squarks 贪心 2012 POI	0 / 0	6
	8334	P3541 [POI 2010] Monotonicity 2010 POI Special Judge O2优化	0 / 0	6

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