Problem Set - 追梦算法网

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	7656	P1689B Mystic Permutation data structures greedy *900	0 / 0	(None)
	7655	P1689C Infected Tree dfs and similar dp trees *1600	0 / 0	(None)
	7654	P1689D Lena and Matrix data structures dp shortest paths *1900	0 / 0	(None)
	7653	P1689E ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs *2500	0 / 0	(None)
	7652	P1690A Print a Pedestal (Codeforces logo?) constructive algorithms greedy *800	0 / 0	(None)
	7651	P1690B Array Decrements greedy implementation *800	0 / 0	(None)
	7650	P1690C Restoring the Duration of Tasks data structures greedy implementation *800	0 / 0	(None)
	7649	P1690D Black and White Stripe implementation two pointers *1000	0 / 0	(None)
	7648	P1690E Price Maximization binary search greedy math two pointers *1500	0 / 0	(None)
	7647	P1690F Shifting String graphs math number theory strings *1700	0 / 0	(None)
	7646	P1690G Count the Trains binary search data structures greedy sortings *2000	0 / 0	(None)
	7645	P1691A Beat The Odds brute force greedy math *800	0 / 0	(None)
	7644	P1691B Shoe Shuffling constructive algorithms greedy implementation two pointers *1000	0 / 0	(None)
	7643	P1691C Sum of Substrings brute force constructive algorithms greedy math strings *1400	0 / 0	(None)
	7642	P1691D Max GEQ Sum binary search constructive algorithms data structures divide and conquer implementation two pointers *1800	0 / 0	(None)
	7641	P1691E Number of Groups data structures dfs and similar dsu graphs greedy sortings *2300	0 / 0	(None)
	7640	P1691F K-Set Tree combinatorics dfs and similar dp math trees *2500	0 / 0	(None)
	7639	P1692A Marathon implementation	0 / 0	(None)
	7638	P1692B All Distinct greedy sortings	0 / 0	(None)
	7637	P1692C Where's the Bishop? implementation	0 / 0	(None)

Pick a problem randomly based on the current filter.