Problemset - Codeforces

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Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
4 days
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Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
4 days
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binary search

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Problems

#	Name
225B	Well-known Numbers binary search, greedy, number theory	1600	x3394
222D	Olympiad binary search, greedy, sortings, two pointers	1900	x2341
216D	Spider's Web binary search, sortings, two pointers	1700	x1499
212D	Cutting a Fence binary search, data structures, dsu	2500	x614
208E	Blood Cousins binary search, data structures, dfs and similar, trees	2100	x8898
204B	Little Elephant and Cards binary search, data structures	1500	x5903
204A	Little Elephant and Interval binary search, combinatorics, dp	1500	x6588
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x19749
201E	Thoroughly Bureaucratic Organization binary search, combinatorics	2600	x483
200D	Programming Language binary search, brute force, expression parsing, implementation	1800	x1054
198E	Gripping Story binary search, data structures, sortings	2400	x554
198C	Delivering Carcinogen binary search, geometry	2400	x428
195A	Let's Watch Football binary search, brute force, math	1000	x10129
192A	Funky Numbers binary search, brute force, implementation	1300	x11564
191E	Thwarting Demonstrations binary search, data structures, trees	2200	x959
185E	Soap Time! - 2 binary search, data structures	3000	x173
181B	Number of Triplets binary search, brute force	1300	x3517
180E	Cubes binary search, dp, two pointers	1800	x2067
177E2	Space Voyage binary search	1900	x502
177E1	Space Voyage binary search	1700	x712
166A	Rank List binary search, implementation, sortings	1100	x20991
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x13814
165B	Burning Midnight Oil binary search, implementation	1500	x22844
164D	Minimum Diameter binary search, brute force	3100	x276
163B	Lemmings binary search	2000	x1177
161A	Dress'em in Vests! binary search, brute force, greedy, two pointers	1300	x5473
160E	Buses and People binary search, data structures, sortings	2400	x682
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x3204
152B	Steps binary search, implementation	1300	x7387
150E	Freezing with Style binary search, data structures, divide and conquer, trees	3000	x1034
147B	Smile House binary search, graphs, matrices	2500	x919
140C	New Year Snowmen binary search, data structures, greedy	1800	x4748
138C	Mushroom Gnomes - 2 binary search, data structures, probabilities, sortings	2200	x962
131F	Present to Mom binary search, two pointers	2000	x727
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	x1373
121D	Lucky Segments binary search, implementation, two pointers	2500	x329
111B	Petya and Divisors binary search, data structures, number theory	1900	x4104
101B	Buses binary search, data structures, dp	1700	x3193
97C	Winning Strategy binary search, graphs, math, shortest paths	2400	x354
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x19072
91B	Queue binary search, data structures	1500	x7730
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x1102
85D	Sum of Medians binary search, brute force, data structures, implementation	2300	x2419
85C	Petya and Tree binary search, dfs and similar, probabilities, sortings, trees	2200	x618
84C	Biathlon binary search, implementation	1700	x1855
83B	Doctor binary search, math, sortings	1800	x1892
78D	Archer's Shot binary search, geometry, math, two pointers	2300	x373
76F	Tourist binary search, data structures, dp	2300	x771
75C	Modified GCD binary search, number theory	1600	x15628
73B	Need For Brake binary search, greedy, sortings	2000	x547
70C	Lucky Tickets binary search, data structures, sortings, two pointers	2200	x632
68B	Energy exchange binary search	1600	x5578
67D	Optical Experiment binary search, data structures, dp	1900	x1777
65C	Harry Potter and the Golden Snitch binary search, geometry	2100	x869
62B	Tyndex.Brome binary search, implementation	1800	x1403
56E	Domino Principle binary search, data structures, sortings	2200	x2837
53B	Blog Photo binary search, implementation	1700	x1570
51C	Three Base Stations binary search, greedy	1800	x2905
50D	Bombing binary search, dp, probabilities	2100	x707
30E	Tricky and Clever Password binary search, constructive algorithms, data structures, greedy, hashing, strings	2800	x920
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x676
24E	Berland collider binary search	2300	x1025
21C	Stripe 2 binary search, dp, sortings	2000	x2538
16C	Monitor binary search, number theory	1800	x5414
11E	Forward, march! binary search, dp, greedy	2800	x439
8D	Two Friends binary search, geometry	2600	x580
6E	Exposition binary search, data structures, dsu, trees, two pointers	1900	x3863

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