Problemset - Codeforces

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Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
15:07:06
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Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
15:07:06
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Problems

#	Name
282B	Painting Eggs greedy, math	1500	x13971
282A	Bit++ implementation	800	x358218
281B	Nearest Fraction brute force, implementation, two pointers	1700	x3412
281A	Word Capitalization implementation, strings	800	x270950
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x261
280D	k-Maximum Subsequence Sum data structures, flows, graphs, implementation	2800	x1653
280C	Game on Tree implementation, math, probabilities, trees	2200	x5130
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x5251
280A	Rectangle Puzzle geometry	2000	x1586
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1603
279D	The Minimum Number of Variables bitmasks, dp	2200	x856
279C	Ladder dp, implementation, two pointers	1700	x8924
279B	Books binary search, brute force, implementation, two pointers	1400	x72408
279A	Point on Spiral brute force, geometry, implementation	1400	x5916
278B	New Problem brute force, strings	1500	x3639
278A	Circle Line implementation	800	x12824
277E	Binary Tree on Plane flows, trees	2400	x1479
277D	Google Code Jam dp, probabilities	2800	x372
277C	Game games, implementation	2400	x491
277B	Set of Points constructive algorithms, geometry	2300	x847
277A	Learning Languages dfs and similar, dsu	1400	x21578
276E	Little Girl and Problem on Trees data structures, graphs, trees	2100	x1859
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x16368
276C	Little Girl and Maximum Sum data structures, greedy, implementation, sortings	1500	x39541
276B	Little Girl and Game games, greedy	1300	x32107
276A	Lunch Rush implementation	900	x30063
275B	Convex Shape constructive algorithms, implementation	1700	x3049
275A	Lights Out implementation	900	x36464
274E	Mirror Room data structures, implementation	3000	x341
274D	Lovely Matrix dfs and similar, graphs, greedy, sortings	2200	x1155
274C	The Last Hole! brute force, geometry	2600	x376
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x5571
274A	k-Multiple Free Set binary search, greedy, sortings	1500	x10812
273E	Dima and Game dp, games	2600	x401
273D	Dima and Figure dp	2400	x479
272E	Dima and Horses combinatorics, constructive algorithms, graphs	2200	x1296
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2834
272C	Dima and Staircase data structures, implementation	1500	x7201
272B	Dima and Sequence implementation, math	1400	x4289
272A	Dima and Friends implementation, math	1000	x27677
271E	Three Horses constructive algorithms, math, number theory	2200	x598
271D	Good Substrings data structures, strings	1800	x14009
271C	Secret constructive algorithms, implementation	1500	x3136
271B	Prime Matrix binary search, brute force, math, number theory	1300	x15458
271A	Beautiful Year brute force	800	x177716
270B	Multithreading data structures, greedy, implementation	1400	x4446
270A	Fancy Fence geometry, implementation, math	1100	x50824
269E	String Theory geometry, math, strings	3100	x118
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x493
269C	Flawed Flow constructive algorithms, flows, graphs, greedy	2100	x1818
269B	Greenhouse Effect dp	1700	x6991
269A	Magical Boxes greedy, math	1600	x3699
268E	Playlist math, probabilities, sortings	2100	x1137
268D	Wall Bars dp	2300	x576
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x14639
268B	Buttons implementation, math	1000	x35782
268A	Games brute force	800	x104198
267C	Berland Traffic math, matrices	2700	x253
267B	Dominoes dfs and similar, graphs	2000	x753
267A	Subtractions math, number theory	900	x9558
266E	More Queries to Array... data structures, math	2500	x1060
266D	BerDonalds graphs, math, shortest paths	2400	x991
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1429
266B	Queue at the School constructive algorithms, graph matchings, implementation, shortest paths	800	x166064
266A	Stones on the Table implementation	800	x244525
265B	Roadside Trees (Simplified Edition) greedy, implementation	1000	x17924
265A	Colorful Stones (Simplified Edition) implementation	800	x42668
264E	Roadside Trees data structures, dp	3000	x469
264D	Colorful Stones dp, two pointers	2500	x451
264C	Choosing Balls dp	2000	x3277
264B	Good Sequences dp, number theory	1500	x12021
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x11814
263E	Rhombus brute force, data structures, dp	2500	x444
263D	Cycle in Graph dfs and similar, graphs	1800	x4478
263C	Circle of Numbers brute force, dfs and similar, implementation	2000	x1135
263B	Squares greedy, implementation, sortings	900	x9779
263A	Beautiful Matrix implementation	800	x317946
262B	Roma and Changing Signs greedy	1200	x12316
262A	Roma and Lucky Numbers implementation	800	x22449
261E	Maxim and Calculator brute force, dp, two pointers	2800	x438
261D	Maxim and Increasing Subsequence dp	2600	x714
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x836
261B	Maxim and Restaurant dp, math, probabilities	1900	x1612
261A	Maxim and Discounts greedy, sortings	1400	x5609
260E	Dividing Kingdom binary search, brute force, data structures	2500	x510
260D	Black and White Tree constructive algorithms, dsu, graphs, greedy, trees	2100	x1665
260C	Balls and Boxes constructive algorithms, greedy, implementation	1700	x3229
260B	Ancient Prophesy brute force, implementation, strings	1600	x4090
260A	Adding Digits implementation, math	1400	x16583
259B	Little Elephant and Magic Square brute force, implementation	1100	x14697
259A	Little Elephant and Chess brute force, strings	1000	x10034
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1319
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1421
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1986
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1604
258A	Little Elephant and Bits greedy, math	1100	x26506
257E	Greedy Elevator data structures, implementation	2200	x346
257D	Sum greedy, math	1900	x1719
257C	View Angle brute force, geometry, math	1800	x4719
257B	Playing Cubes games, greedy, implementation	1300	x7776

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