*2500 - Problem Set

ID	Problem Show tags Hide tags	AC / Tried	Difficulty
3070	CF1444C Team-Building data structures dfs and similar dsu graphs *2500	0 / 0	(None)
3031	CF1452E Two Editorials brute force dp greedy sortings two pointers *2500	0 / 0	(None)
2960	CF1467E Distinctive Roots in a Tree data structures dfs and similar dp trees *2500	0 / 0	(None)
2952	CF1468G Hobbits binary search geometry *2500	0 / 0	(None)
2950	CF1468I Plane Tiling geometry implementation math *2500	0 / 0	(None)
2934	CF1470C Strange Shuffle binary search brute force constructive algorithms interactive *2500	0 / 0	(None)
2908	CF1474E What Is It? constructive algorithms greedy *2500	0 / 0	(None)
2877	CF1479C Continuous City bitmasks constructive algorithms *2500	0 / 0	(None)
2867	CF1481E Sorting Books data structures dp greedy *2500	0 / 0	(None)
2851	CF1485E Move and Swap dfs and similar dp greedy trees *2500	0 / 0	(None)
2827	CF1488G Painting Numbers special problem data structures greedy number theory 2500	0 / 0	(None)
2800	CF1492E Almost Fault-Tolerant Database brute force constructive algorithms dfs and similar greedy implementation *2500	0 / 0	(None)
2773	CF1497D Genius bitmasks dp graphs number theory *2500	0 / 0	(None)
2771	CF1497E2 Square-Free Division (hard version) data structures dp greedy math number theory two pointers *2500	0 / 0	(None)
2764	CF1498F Christmas Game bitmasks data structures dfs and similar dp games math trees *2500	0 / 0	(None)
2729	CF1505H L BREAK into program special problem 2500	0 / 0	(None)
2717	CF1508C Complete the MST bitmasks brute force data structures dfs and similar dsu graphs greedy trees *2500	0 / 0	(None)
2676	CF1513F Swapping Problem brute force constructive algorithms data structures sortings *2500	0 / 0	(None)
2655	CF1516E Baby Ehab Plays with Permutations combinatorics dp math *2500	0 / 0	(None)
2650	CF1517E Group Photo binary search data structures implementation two pointers *2500	0 / 0	(None)
2626	CF1521D Nastia Plays with a Tree constructive algorithms data structures dfs and similar dp dsu greedy implementation trees *2500	0 / 0	(None)
2595	CF1527E Partition Game binary search data structures divide and conquer dp *2500	0 / 0	(None)
2590	CF1528D It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms graphs shortest paths *2500	0 / 0	(None)
2553	CF1534F1 Falling Sand (Easy Version) dfs and similar graphs greedy *2500	0 / 0	(None)
2514	CF1539E Game with Cards binary search constructive algorithms data structures dp greedy implementation *2500	0 / 0	(None)
2470	CF1548C The Three Little Pigs combinatorics dp fft math *2500	0 / 0	(None)
2459	CF1550E Stringforces binary search bitmasks brute force dp strings two pointers *2500	0 / 0	(None)
2409	CF1556F Sports Betting bitmasks combinatorics dp graphs math probabilities *2500	0 / 0	(None)
2389	CF1559D2 Mocha and Diana (Hard Version) brute force constructive algorithms dfs and similar dsu graphs greedy trees two pointers *2500	0 / 0	(None)
2371	CF1562E Rescue Niwen! dp greedy string suffix structures strings *2500	0 / 0	(None)
2339	CF1571G A Battle Against a Dragon special problem data structures dp 2500	0 / 0	(None)
2333	CF1572B Xor of 3 brute force constructive algorithms greedy two pointers *2500	0 / 0	(None)
2321	CF1574E Coloring combinatorics constructive algorithms implementation math *2500	0 / 0	(None)
2256	CF1583F Defender of Childhood Dreams bitmasks constructive algorithms divide and conquer *2500	0 / 0	(None)
2239	CF1585G Poachers dp games graphs trees *2500	0 / 0	(None)
2115	CF1611G Robot and Candies data structures graph matchings greedy *2500	0 / 0	(None)
2107	CF1612G Max Sum Array combinatorics constructive algorithms greedy sortings *2500	0 / 0	(None)
2022	CF1623E Middle Duplication data structures dfs and similar greedy strings trees *2500	0 / 0	(None)
2009	CF1625E1 Cats on the Upgrade (easy version) brute force data structures dfs and similar divide and conquer dp graphs trees *2500	0 / 0	(None)
1942	CF1637F Towers constructive algorithms dfs and similar dp greedy trees *2500	0 / 0	(None)
1894	CF1647E Madoka and the Sixth-graders data structures dfs and similar greedy *2500	0 / 0	(None)
1837	CF1658E Gojou and Matrix Game data structures dp games hashing implementation math number theory sortings *2500	0 / 0	(None)
1816	CF1661E Narrow Components brute force data structures dp dsu math trees *2500	0 / 0	(None)
1784	CF1665E MinimizOR bitmasks brute force data structures divide and conquer greedy implementation two pointers *2500	0 / 0	(None)
1778	CF1666E Even Split binary search constructive algorithms greedy math *2500	0 / 0	(None)
1722	CF1673E Power or XOR? bitmasks combinatorics math number theory *2500	0 / 0	(None)
1692	CF1677D Tokitsukaze and Permutations dp math *2500	0 / 0	(None)
1639	CF1687C Sanae and Giant Robot binary search brute force data structures dsu greedy sortings *2500	0 / 0	(None)
1626	CF1689E ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs *2500	0 / 0	(None)
1611	CF1691F K-Set Tree combinatorics dfs and similar dp math trees *2500	0 / 0	(None)
1546	CF1701E Text Editor brute force dp greedy strings *2500	0 / 0	(None)
1545	CF1701F Points combinatorics data structures implementation math matrices *2500	0 / 0	(None)
1489	CF1709F Multiset of Strings bitmasks brute force dp fft flows graphs math meet-in-the-middle trees *2500	0 / 0	(None)
1486	CF1710C XOR Triangle bitmasks brute force constructive algorithms dp greedy math *2500	0 / 0	(None)
1475	CF1712E2 LCM Sum (hard version) brute force data structures math number theory two pointers *2500	0 / 0	(None)
1448	CF1716E Swap and Maximum Block bitmasks data structures dfs and similar divide and conquer dp *2500	0 / 0	(None)
1446	CF1716F Bags with Balls combinatorics dp math number theory *2500	0 / 0	(None)
1440	CF1717F Madoka and The First Session constructive algorithms flows graph matchings graphs implementation *2500	0 / 0	(None)
10452	CF1725E Electrical Efficiency combinatorics data structures dp math number theory trees *2500	0 / 0	(None)
10447	CF1725J Journey dp trees *2500	0 / 0	(None)
10446	CF1725K Kingdom of Criticism data structures dsu *2500	0 / 0	(None)
10406	CF1731F Function Sum brute force combinatorics dp fft math *2500	0 / 0	(None)
10385	CF1734F Zeros and Ones bitmasks divide and conquer dp math *2500	0 / 0	(None)
10367	CF1737E Ela Goes Hiking combinatorics dp math probabilities *2500	0 / 0	(None)
9779	CF1746E1 Joking (Easy Version) binary search constructive algorithms interactive ternary search *2500	0 / 0	(None)
9313	CF1758E Tick, Tock combinatorics dfs and similar dsu graphs *2500	0 / 0	(None)
8845	CF1764F Doremy's Experimental Tree brute force constructive algorithms dfs and similar dsu sortings trees *2500	0 / 0	(None)
8524	CF1767E Algebra Flash bitmasks brute force dp graphs math meet-in-the-middle trees *2500	0 / 0	(None)
8302	CF1771E Hossam and a Letter brute force dp implementation two pointers *2500	0 / 0	(None)
8290	CF1771F Hossam and Range Minimum Query binary search bitmasks data structures hashing probabilities strings trees *2500	0 / 0	(None)
8191	CF1773I Interactive Factorial Guessing brute force games implementation interactive *2500	0 / 0	(None)
7979	CF1775F Laboratory on Pluto constructive algorithms dp greedy math *2500	0 / 0	(None)
7945	CF1776C Library game games greedy interactive sortings *2500	0 / 0	(None)
7879	CF1776I Spinach Pizza games geometry greedy interactive *2500	0 / 0	(None)
7868	CF1776J Italian Data Centers graphs shortest paths *2500	0 / 0	(None)
7701	CF1778E The Tree Has Fallen! bitmasks dfs and similar math trees *2500	0 / 0	(None)
7623	CF1779F Xorcerer's Stones bitmasks constructive algorithms dp trees *2500	0 / 0	(None)
7368	CF1783F Double Sort II dfs and similar flows graph matchings graphs *2500	0 / 0	(None)
7191	CF1787F Inverse Transformation constructive algorithms implementation math *2500	0 / 0	(None)
7091	CF1788F XOR, Tree, and Queries bitmasks constructive algorithms dfs and similar dsu graphs greedy implementation trees *2500	0 / 0	(None)
7035	CF1789E Serval and Music Game brute force dp implementation math number theory *2500	0 / 0	(None)
6524	CF1796E Colored Subgraphs dfs and similar dp games greedy trees *2500	0 / 0	(None)
6379	CF1798F Gifts from Grandfather Ahmed dp math number theory *2500	0 / 0	(None)
5869	CF1806D DSU Master combinatorics dp dsu math *2500	0 / 0	(None)
5679	CF1808E2 Minibuses on Venus (medium version) combinatorics divide and conquer dp matrices *2500	0 / 0	(None)
5601	CF1809F Traveling in Berland binary search data structures graphs greedy implementation *2500	0 / 0	(None)
5257	CF1814D Balancing Weapons binary search brute force data structures math two pointers *2500	0 / 0	(None)
4758	CF1823E Removing Graph brute force dp games graphs math *2500	0 / 0	(None)
4701	CF1824C LuoTianyi and XOR-Tree data structures dfs and similar dp dsu greedy trees *2500	0 / 0	(None)
4091	CF1834F Typewriter brute force math *2500	0 / 0	(None)
4068	CF1835B Lottery binary search brute force greedy math two pointers *2500	0 / 0	(None)
3880	CF1838E Count Supersequences combinatorics dp math *2500	0 / 0	(None)
3724	CF1840G2 In Search of Truth (Hard Version) constructive algorithms interactive math meet-in-the-middle probabilities *2500	0 / 0	(None)
3590	CF1842F Tenzing and Tree dfs and similar greedy shortest paths sortings trees *2500	0 / 0	(None)
3324	CF1845E Boxes and Balls dp implementation math *2500	0 / 0	(None)
3157	CF1847F The Boss's Identity binary search bitmasks data structures dfs and similar greedy math sortings *2500	0 / 0	(None)
2724	CF1854C Expected Destruction combinatorics dp math probabilities *2500	0 / 0	(None)
2468	CF1858E1 Rollbacks (Easy Version) brute force data structures dfs and similar trees *2500	0 / 0	(None)
2401	CF1859E Maximum Monogonosity brute force dp math *2500	0 / 0	(None)
1858	CF1866K Keen Tree Calculation binary search data structures dp geometry graphs implementation trees *2500	0 / 0	(None)

Lucky

Pick a problem randomly based on the current filter.

Categories

动态规划

搜索

计算几何

贪心

树结构

图结构

数论

模拟

数据结构

博弈论

字符串

组合数学

线性代数

高精度

递推

概率论

NPC

其他

Status

Development

Support

About

Categories

Status

Development

Support

About

Don't have an account?

SIGN IN