Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	2884	P1425B Blue and Red of Our Faculty! divide and conquer dp *2600	0 / 0	10
	2883	P1425C Captain of Knights math *3100	0 / 0	10
	2882	P1425D Danger of Mad Snakes combinatorics dp math *2300	0 / 0	8
	2881	P1425E Excitation of Atoms greedy implementation *2200	0 / 0	8
	2880	P1425F Flamingoes of Mystery interactive *1400	0 / 0	4
	2879	P1425H Huge Boxes of Animal Toys constructive algorithms *1300	0 / 0	4
	2878	P1425I Impressive Harvesting of The Orchard data structures *2800	0 / 0	10
	2877	P1426A Floor Number implementation math *800	0 / 0	3
	2876	P1426B Symmetric Matrix implementation *900	0 / 0	3
	2875	P1426C Increase and Copy binary search constructive algorithms math *1100	0 / 0	3
	2874	P1426D Non-zero Segments constructive algorithms data structures greedy sortings *1500	0 / 0	5
	2873	P1426E Rock, Paper, Scissors brute force constructive algorithms flows greedy math *1800	0 / 0	6
	2872	P1426F Number of Subsequences combinatorics dp strings *2000	0 / 0	7
	2871	P1427A Avoiding Zero math sortings *900	0 / 0	3
	2870	P1427B Chess Cheater greedy implementation sortings *1400	0 / 0	4
	2869	P1427C The Hard Work of Paparazzi dp *2000	0 / 0	7
	2868	P1427D Unshuffling a Deck constructive algorithms implementation *2000	0 / 0	7
	2867	P1427E Xum bitmasks constructive algorithms math matrices number theory *2500	0 / 0	9
	2866	P1427F Boring Card Game data structures greedy trees *3200	0 / 0	10
	2865	P1427G One Billion Shades of Grey flows graphs *3300	0 / 0	10
	2864	P1427H Prison Break binary search games geometry ternary search *3500	0 / 0	10
	2863	P1428A Box is Pull math *800	0 / 0	3
	2862	P1428B Belted Rooms graphs implementation *1200	0 / 0	4
	2861	P1428C ABBB brute force data structures greedy strings *1100	0 / 0	3
	2860	P1428D Bouncing Boomerangs constructive algorithms greedy implementation *1900	0 / 0	6
	2859	P1428E Carrots for Rabbits binary search data structures greedy math sortings *2200	0 / 0	8
	2858	P1428F Fruit Sequences binary search data structures divide and conquer dp two pointers *2400	0 / 0	9
	2857	P1428G1 Lucky Numbers (Easy Version) dp greedy *2900	0 / 0	10
	2856	P1428G2 Lucky Numbers (Hard Version) dp greedy *3000	0 / 0	10
	2855	P1428H Rotary Laser Lock binary search interactive *3500	0 / 0	10
	2854	P1430A Number of Apartments brute force constructive algorithms math *900	0 / 0	3
	2853	P1430B Barrels greedy implementation sortings *800	0 / 0	3
	2852	P1430C Numbers on Whiteboard constructive algorithms data structures greedy implementation math *1000	0 / 0	3
	2851	P1430D String Deletion binary search data structures greedy two pointers *1700	0 / 0	5
	2850	P1430E String Reversal data structures greedy strings *1900	0 / 0	6
	2849	P1430F Realistic Gameplay dp greedy *2600	0 / 0	10
	2848	P1430G Yet Another DAG Problem bitmasks dfs and similar dp flows graphs math *2600	0 / 0	10
	2847	P1431A Selling Hamburgers special problem 800	0 / 0	3
	2846	P1431B Polycarp and the Language of Gods special problem implementation two pointers 1400	0 / 0	4
	2845	P1431C Black Friday special problem implementation 1600	0 / 0	5
	2844	P1431D Used Markers special problem greedy 1500	0 / 0	5
	2843	P1431E Chess Match special problem 2000	0 / 0	7
	2842	P1431F Neural Network Problem special problem binary search greedy 2100	0 / 0	7
	2841	P1431G Number Deletion Game special problem dp games greedy 2100	0 / 0	7
	2840	P1431H Rogue-like Game special problem brute force greedy two pointers 2600	0 / 0	10
	2839	P1431I Cyclic Shifts special problem strings 2900	0 / 0	10
	2838	P1431J Zero-XOR Array special problem dp 3400	0 / 0	10
	2837	P1433A Boring Apartments implementation math *800	0 / 0	3
	2836	P1433B Yet Another Bookshelf greedy implementation *800	0 / 0	3
	2835	P1433C Dominant Piranha constructive algorithms greedy *900	0 / 0	3
	2834	P1433D Districts Connection constructive algorithms dfs and similar *1200	0 / 0	4
	2833	P1433E Two Round Dances combinatorics math *1300	0 / 0	4
	2832	P1433F Zero Remainder Sum dp *2100	0 / 0	7
	2831	P1433G Reducing Delivery Cost brute force graphs shortest paths *2100	0 / 0	7
	2830	P1434E A Convex Game dsu games *3500	0 / 0	10
	2829	P1436A Reorder math *800	0 / 0	3
	2828	P1436B Prime Square constructive algorithms math *900	1 / 1	3
	2827	P1436C Binary Search binary search combinatorics *1500	0 / 0	5
	2826	P1436D Bandit in a City binary search dfs and similar graphs greedy trees *1900	0 / 0	6
	2825	P1436E Complicated Computations binary search data structures two pointers *2400	0 / 0	9
	2824	P1436F Sum Over Subsets combinatorics math number theory *2800	0 / 0	10
	2823	P1437A Marketing Scheme brute force constructive algorithms greedy math *800	0 / 0	3
	2822	P1437B Reverse Binary Strings constructive algorithms greedy *1200	0 / 0	4
	2821	P1437C Chef Monocarp dp flows graph matchings greedy math sortings *1800	0 / 0	6
	2820	P1437D Minimal Height Tree graphs greedy shortest paths trees *1600	0 / 0	5
	2819	P1437E Make It Increasing binary search constructive algorithms data structures dp implementation *2200	0 / 0	8
	2818	P1437F Emotional Fishermen combinatorics dp math two pointers *2600	0 / 0	10
	2817	P1437G Death DBMS data structures string suffix structures strings trees *2600	0 / 0	10
	2816	P1438A Specific Tastes of Andre constructive algorithms implementation *800	0 / 0	3
	2815	P1438B Valerii Against Everyone constructive algorithms data structures greedy sortings *1000	0 / 0	3
	2814	P1438C Engineer Artem 2-sat chinese remainder theorem constructive algorithms fft flows *2000	0 / 0	7
	2813	P1438D Powerful Ksenia bitmasks constructive algorithms math *2200	0 / 0	8
	2812	P1438E Yurii Can Do Everything binary search bitmasks brute force constructive algorithms divide and conquer two pointers *2500	0 / 0	9
	2811	P1438F Olha and Igor interactive probabilities trees *3000	0 / 0	10
	2810	P1439A1 Binary Table (Easy Version) constructive algorithms implementation *1500	0 / 0	5
	2809	P1439A2 Binary Table (Hard Version) constructive algorithms graphs greedy implementation *1900	0 / 0	6
	2808	P1439B Graph Subset Problem constructive algorithms data structures graphs *2600	0 / 0	10
	2807	P1439C Greedy Shopping binary search data structures divide and conquer greedy implementation *2600	0 / 0	10
	2806	P1439D INOI Final Contests combinatorics dp fft *3100	0 / 0	10
	2805	P1439E Cheat and Win bitmasks data structures games trees *3500	0 / 0	10
	2804	P1440A Buy the String implementation math *800	0 / 0	3
	2803	P1440B Sum of Medians greedy math *900	0 / 0	3
	2802	P1442A Extreme Subtraction constructive algorithms dp greedy *1800	0 / 0	6
	2801	P1442B Identify the Operations combinatorics data structures dsu greedy implementation *1800	0 / 0	6
	2800	P1442C Graph Transpositions dfs and similar graphs greedy shortest paths *2400	0 / 0	9
	2799	P1442D Sum data structures divide and conquer dp greedy *2800	0 / 0	10
	2798	P1442E Black, White and Grey Tree binary search constructive algorithms dfs and similar dp greedy trees *3000	0 / 0	10
	2797	P1442F Differentiating Games games interactive *3400	0 / 0	10
	2796	P1443A Kids Seating constructive algorithms math *800	0 / 0	3
	2795	P1443B Saving the City dp greedy math sortings *1300	0 / 0	4
	2794	P1443C The Delivery Dilemma binary search greedy sortings *1400	0 / 0	4
	2793	P1443E Long Permutation brute force math two pointers *2400	0 / 0	9
	2792	P1444A Division brute force math number theory *1500	0 / 0	5
	2791	P1444B Divide and Sum combinatorics math sortings *1900	0 / 0	6
	2790	P1444C Team-Building data structures dfs and similar dsu graphs *2500	0 / 0	9
	2789	P1444D Rectangular Polyline constructive algorithms dp geometry *2900	0 / 0	10
	2788	P1444E Finding the Vertex brute force dfs and similar dp interactive trees *3500	0 / 0	10
	2787	P1445A Array Rearrangment greedy sortings *800	0 / 0	3
	2786	P1445B Elimination greedy math *900	0 / 0	3
	2785	P1446A Knapsack constructive algorithms greedy sortings *1300	0 / 0	4

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