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
142A	Help Farmer brute force, math	1600	x2844
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x1366
141D	Take-off Ramps graphs, shortest paths	2300	x1150
141C	Queue constructive algorithms, greedy, sortings	1800	x2726
141B	Hopscotch geometry, math	1400	x5789
141A	Amusing Joke implementation, sortings, strings	800	x101338
140F	New Year Snowflake geometry, sortings	2600	x401
140E	New Year Garland combinatorics, dp	2600	x1036
140D	New Year Contest greedy, sortings	1800	x2312
140C	New Year Snowmen binary search, data structures, greedy	1800	x4748
140B	New Year Cards brute force, greedy, implementation	1800	x1753
140A	New Year Table geometry, math	1700	x4365
139B	Wallpaper implementation, math	1600	x1460
139A	Petr and Book implementation	1000	x37476
138E	Hellish Constraints brute force, dp, two pointers	2900	x188
138D	World of Darkraft dp, games	2500	x592
138C	Mushroom Gnomes - 2 binary search, data structures, probabilities, sortings	2200	x962
138B	Digits Permutations greedy	1900	x1110
138A	Literature Lesson implementation	1600	x2589
137E	Last Chance data structures, implementation, strings	2000	x1377
137D	Palindromes dp, strings	1900	x1722
137C	History sortings	1500	x7809
137B	Permutation greedy	1000	x15031
137A	Postcards and photos implementation	900	x7829
136B	Ternary Logic implementation, math	1100	x5327
136A	Presents implementation	800	x146312
135E	Weak Subsequence combinatorics	3000	x357
135D	Cycle brute force, dfs and similar, implementation	2500	x314
135C	Zero-One constructive algorithms, games, greedy	1900	x1448
135B	Rectangle and Square brute force, geometry, math	1600	x2651
135A	Replacement greedy, implementation, sortings	1300	x8255
134C	Swaps constructive algorithms, graphs, greedy	2200	x575
134B	Pairs of Numbers brute force, dfs and similar, math, number theory	1900	x2483
134A	Average Numbers brute force, implementation	1200	x4790
133B	Unary implementation	1200	x9391
133A	HQ9+ implementation	900	x124903
132E	Bits of merry old England flows, graphs	2700	x569
132D	Constants in the language of Shakespeare constructive algorithms, dp, greedy	2100	x724
132C	Logo Turtle dp	1800	x2643
132B	Piet implementation	2100	x757
132A	Turing Tape implementation	1300	x2975
131F	Present to Mom binary search, two pointers	2000	x727
131E	Yet Another Task with Queens sortings	1700	x2090
131D	Subway dfs and similar, graphs	1600	x5263
131C	The World is a Theatre combinatorics, math	1400	x12576
131B	Opposites Attract implementation, math	1200	x7547
131A	cAPS lOCK implementation, strings	1000	x100897
130J	Date calculation *special problem	1800	x357
130I	Array sorting *special problem, sortings	2300	x191
130H	Balanced brackets *special problem	1600	x929
130G	CAPS LOCK ON *special problem	1700	x300
130F	Prime factorization *special problem	1600	x300
130E	Tribonacci numbers *special problem	1600	x323
130D	Exponentiation *special problem	1500	x425
130C	Decimal sum *special problem	1500	x539
130B	Gnikool Ssalg *special problem, implementation, strings	1400	x563
130A	Hexagonal numbers *special problem, implementation	900	x1931
129B	Students and Shoelaces brute force, dfs and similar, graphs, implementation	1200	x13860
129A	Cookies implementation	900	x25203
128E	Birthday geometry, math	2900	x113
128D	Numbers constructive algorithms, implementation	2000	x1261
128C	Games with Rectangle combinatorics, dp	2000	x3244
128B	String brute force, constructive algorithms, hashing, implementation, string suffix structures, strings	2100	x2869
128A	Statues dfs and similar	1500	x3508
127B	Canvas Frames implementation	1000	x10425
127A	Wasted Time geometry	900	x12583
126E	Pills brute force, flows	2900	x98
126D	Fibonacci Sums dp, math	2300	x946
126C	E-reader Display constructive algorithms, greedy	2000	x817
126B	Password binary search, dp, hashing, string suffix structures, strings	1700	x24731
126A	Hot Bath binary search, brute force, math	1900	x1597
125E	MST Company binary search, graphs	2400	x1367
125D	Two progressions constructive algorithms, greedy	2200	x439
125C	Hobbits' Party constructive algorithms, greedy	1600	x1087
125B	Simple XML implementation	1000	x3709
125A	Measuring Lengths in Baden math	1400	x3230
124B	Permutations brute force, combinatorics, implementation	1400	x4871
124A	The number of positions math	1000	x44183
123E	Maze dfs and similar, dp, probabilities, trees	2500	x803
123D	String string suffix structures	2300	x1424
123C	Brackets combinatorics, dp, greedy	2300	x720
123B	Squares math	1800	x1306
123A	Prime Permutation implementation, number theory, strings	1300	x3986
122B	Lucky Substring brute force, implementation	1000	x13263
122A	Lucky Division brute force, number theory	1000	x149673
121E	Lucky Array data structures	2400	x2057
121D	Lucky Segments binary search, implementation, two pointers	2500	x329
121C	Lucky Permutation brute force, combinatorics, number theory	1900	x1434
121B	Lucky Transformation strings	1500	x2821
121A	Lucky Sum implementation	1100	x10545
120J	Minimum Sum divide and conquer, geometry, sortings	1900	x1024
120I	Luck is in Numbers greedy	2200	x316
120H	Brevity is Soul of Wit graph matchings	1800	x1589
120G	Boom implementation	1800	x718
120F	Spiders dp, greedy, trees	1400	x4127
120E	Put Knight! games, math	1400	x2963
120D	Three Sons brute force	1400	x2100
120C	Winnie-the-Pooh and honey implementation, math	1100	x3945
120B	Quiz League implementation	1100	x3668
120A	Elevator brute force, implementation, math	1000	x5662

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