Problemset - Codeforces

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

#	Name
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x8310
1340A	Nastya and Strange Generator brute force, data structures, greedy, implementation	1500	x13691
1339B	Sorted Adjacent Differences constructive algorithms, sortings	1200	x28335
1339A	Filling Diamonds brute force, dp, implementation, math	900	x34200
1338E	JYPnation graphs	3500	x406
1338D	Nested Rubber Bands constructive algorithms, dfs and similar, dp, math, trees	2700	x1126
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x3440
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x9521
1338A	Powered Addition greedy, math	1500	x30326
1337B	Kana and Dragon Quest game greedy, implementation, math	900	x36856
1337A	Ichihime and Triangle constructive algorithms, math	800	x42887
1336F	Journey data structures, divide and conquer, graphs, trees	3500	x278
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x481
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x831
1336D	Yui and Mahjong Set constructive algorithms, interactive	3200	x529
1336C	Kaavi and Magic Spell dp, strings	2200	x4085
1336B	Xenia and Colorful Gems binary search, greedy, math, sortings, two pointers	1700	x12128
1336A	Linova and Kingdom dfs and similar, dp, greedy, sortings, trees	1600	x24646
1335F	Robots on a Grid data structures, dfs and similar, dsu, graphs, greedy, matrices	2200	x2421
1335E2	Three Blocks Palindrome (hard version) brute force, data structures, dp, two pointers	1800	x9371
1335E1	Three Blocks Palindrome (easy version) binary search, brute force, data structures, dp, two pointers	1700	x11744
1335D	Anti-Sudoku constructive algorithms, implementation	1300	x29448
1335C	Two Teams Composing binary search, greedy, implementation, sortings	1100	x38950
1335B	Construct the String constructive algorithms	900	x42578
1335A	Candies and Two Sisters math	800	x104694
1334G	Substring Search bitmasks, brute force, fft	2900	x417
1334F	Strange Function binary search, data structures, dp, greedy	2500	x1504
1334E	Divisor Paths combinatorics, graphs, greedy, math, number theory	2200	x3178
1334D	Minimum Euler Cycle constructive algorithms, graphs, greedy, implementation	1800	x7723
1334C	Circle of Monsters brute force, constructive algorithms, greedy, math	1600	x17921
1334B	Middle Class greedy, sortings	1100	x27616
1334A	Level Statistics implementation, math	1200	x24360
1333F	Kate and imperfection greedy, implementation, math, number theory, sortings, two pointers	2200	x4572
1333E	Road to 1600 brute force, constructive algorithms	2400	x1809
1333D	Challenges in school №41 brute force, constructive algorithms, games, graphs, greedy, implementation, sortings	2100	x4130
1333C	Eugene and an array binary search, data structures, implementation, two pointers	1700	x13359
1333B	Kind Anton greedy, implementation	1100	x22228
1333A	Little Artem constructive algorithms	1000	x25926
1332G	No Monotone Triples data structures	3100	x363
1332F	Independent Set dfs and similar, dp, trees	2500	x1128
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x4309
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x8444
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x20844
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x18950
1332A	Exercising Walk greedy, implementation, math	1100	x19863
1331H	It's showtime *special problem		x649
1331G	Lingua Romana *special problem		x594
1331F	Elementary! *special problem, brute force, dp, strings		x603
1331E	Jordan Smiley *special problem, dfs and similar, geometry, implementation		x1239
1331D	Again? *special problem, implementation		x12102
1331C	...And after happily lived ever they *special problem, bitmasks		x3213
1331B	Limericks *special problem, math, number theory		x7160
1331A	Is it rated? *special problem		x17505
1330B	Dreamoon Likes Permutations implementation, math	1400	x14536
1330A	Dreamoon and Ranking Collection implementation	900	x19460
1329E	Dreamoon Loves AA binary search, greedy	3300	x265
1329D	Dreamoon Likes Strings constructive algorithms, data structures	3100	x536
1329C	Drazil Likes Heap constructive algorithms, data structures, greedy, implementation	2400	x1804
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x7056
1329A	Dreamoon Likes Coloring constructive algorithms, greedy, implementation, math	1800	x9669
1328F	Make k Equal greedy	2200	x3523
1328E	Tree Queries dfs and similar, graphs, trees	1900	x11701
1328D	Carousel constructive algorithms, dp, graphs, greedy, math	1800	x14521
1328C	Ternary XOR greedy, implementation	1200	x33070
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x32037
1328A	Divisibility Problem math	800	x131778
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x526
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x2028
1327E	Count The Blocks combinatorics, dp, math	1800	x9597
1327D	Infinite Path brute force, dfs and similar, graphs, math, number theory	2200	x3549
1327C	Game with Chips constructive algorithms, implementation	1600	x14085
1327B	Princesses and Princes brute force, graphs, greedy	1200	x19488
1327A	Sum of Odd Integers math	1100	x45698
1326G	Spiderweb Trees dp, geometry, trees	3500	x108
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x679
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x1007
1326E	Bombs data structures, two pointers	2400	x2420
1326D2	Prefix-Suffix Palindrome (Hard version) binary search, greedy, hashing, string suffix structures, strings	1800	x11744
1326D1	Prefix-Suffix Palindrome (Easy version) hashing, string suffix structures, strings	1500	x13287
1326C	Permutation Partitions combinatorics, greedy, math	1300	x16395
1326B	Maximums implementation, math	900	x25265
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x32669
1325F	Ehab's Last Theorem constructive algorithms, dfs and similar, graphs, greedy	2500	x2327
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x2335
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x13585
1325C	Ehab and Path-etic MEXs constructive algorithms, dfs and similar, greedy, trees	1500	x17147
1325B	CopyCopyCopyCopyCopy greedy, implementation	800	x38812
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x46173
1324F	Maximum White Subtree dfs and similar, dp, graphs, trees	1800	x13043
1324E	Sleeping Schedule dp, implementation	1700	x16994
1324D	Pair of Topics binary search, data structures, sortings, two pointers	1400	x34062
1324C	Frog Jumps binary search, data structures, dfs and similar, greedy, implementation	1100	x30499
1324B	Yet Another Palindrome Problem brute force, strings	1100	x30787
1324A	Yet Another Tetris Problem implementation, number theory	900	x27308
1323B	Count Subrectangles binary search, greedy, implementation	1500	x11759
1323A	Even Subset Sum Problem brute force, dp, greedy, implementation	800	x20887
1322F	Assigning Fares dp, trees	3500	x162
1322E	Median Mountain Range data structures	3300	x346
1322D	Reality Show bitmasks, dp	2800	x882
1322C	Instant Noodles graphs, hashing, math, number theory	2300	x2703

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