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
518F	Pasha and Pipe binary search, brute force, combinatorics, dp, implementation	2300	x418
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x5360
514C	Watto and Mechanism binary search, data structures, hashing, string suffix structures, strings	2000	x8150
505E	Mr. Kitayuta vs. Bamboos binary search, greedy	2900	x1559
504E	Misha and LCP on Tree binary search, dfs and similar, hashing, string suffix structures, trees	3000	x1063
501E	Misha and Palindrome Degree binary search, combinatorics, implementation	2500	x951
496D	Tennis Game binary search	1900	x3200
493C	Vasya and Basketball binary search, brute force, data structures, implementation, sortings, two pointers	1600	x7503
492D	Vanya and Computer Game binary search, implementation, math, sortings	1800	x3321
492B	Vanya and Lanterns binary search, implementation, math, sortings	1200	x90112
490E	Restoring Increasing Sequence binary search, brute force, greedy, implementation	2000	x1699
489E	Hiking binary search, dp	2300	x1146
487B	Strip binary search, data structures, dp, two pointers	2000	x4208
487A	Fight the Monster binary search, brute force, implementation	1800	x3952
484E	Sign on Fence binary search, constructive algorithms, data structures	2500	x3025
484B	Maximum Value binary search, math, sortings, two pointers	2100	x7727
483B	Friends and Presents binary search, math	1800	x4336
479D	Long Jumps binary search, greedy, implementation	1700	x5008
474E	Pillars binary search, data structures, dp, sortings, trees	2000	x4167
474B	Worms binary search, implementation	1200	x62444
471C	MUH and House of Cards binary search, brute force, greedy, math	1700	x3744
468C	Hack it! binary search, constructive algorithms, math	2500	x2739
466C	Number of Ways binary search, brute force, data structures, dp, two pointers	1700	x41858
461E	Appleman and a Game binary search, shortest paths, strings	3000	x516
460C	Present binary search, data structures, greedy	1700	x6784
448D	Multiplication Table binary search, brute force	1800	x16655
444E	DZY Loves Planting binary search, dsu, trees	2700	x856
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x861
439D	Devu and his Brother binary search, sortings, ternary search, two pointers	1700	x6845
434E	Furukawa Nagisa's Tree binary search, divide and conquer, sortings, trees	3000	x311
431E	Chemistry Experiment binary search, data structures, ternary search	2200	x1187
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2873
425D	Sereja and Squares binary search, data structures, hashing	2300	x1630
424D	Biathlon Track binary search, brute force, constructive algorithms, data structures, dp	2300	x609
424B	Megacity binary search, greedy, implementation, sortings	1200	x8465
421D	Bug in Code binary search, data structures, sortings	1900	x694
416C	Booking System binary search, dp, greedy, implementation	1600	x8702
415B	Mashmokh and Tokens binary search, greedy, implementation, math	1500	x6691
414D	Mashmokh and Water Tanks binary search, data structures, greedy, trees, two pointers	2300	x748
404E	Maze 1D binary search, greedy, implementation	2200	x642
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x1043
387E	George and Cards binary search, data structures	2200	x989
386B	Fly, freebies, fly! binary search, brute force, implementation	1400	x2526
385C	Bear and Prime Numbers binary search, brute force, data structures, dp, implementation, math, number theory	1700	x10577
383B	Volcanoes binary search, implementation, sortings, two pointers	2500	x783
382B	Number Busters binary search, math	2000	x1505
380A	Sereja and Prefixes binary search, brute force	1600	x2905
377B	Preparing for the Contest binary search, data structures, greedy, sortings	1900	x2448
374E	Inna and Babies binary search, data structures, dsu, geometry, implementation	2600	x206
374D	Inna and Sequence binary search, data structures, dp, trees	2000	x991
373B	Making Sequences is Fun binary search, implementation, math	1600	x2795
372D	Choosing Subtree is Fun binary search, data structures, dfs and similar, trees, two pointers	2600	x1129
372A	Counting Kangaroos is Fun binary search, greedy, sortings, two pointers	1600	x15575
371C	Hamburgers binary search, brute force	1600	x34444
369E	Valera and Queries binary search, data structures	2200	x2778
367B	Sereja ans Anagrams binary search, data structures	1900	x2678
366D	Dima and Trap Graph binary search, data structures, dfs and similar, dsu, shortest paths, two pointers	2000	x1722
363D	Renting Bikes binary search, greedy	1800	x4325
360B	Levko and Array binary search, dp	2000	x3493
359D	Pair of Numbers binary search, brute force, data structures, math, two pointers	2000	x5718
350D	Looking for Owls binary search, data structures, geometry, hashing, sortings	2400	x296
348A	Mafia binary search, math, sortings	1600	x14677
343C	Read Time binary search, greedy, two pointers	1900	x3211
340D	Bubble Sort Graph binary search, data structures, dp	1500	x7904
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x5227
335A	Banana binary search, constructive algorithms, greedy	1400	x2846
333E	Summer Earnings binary search, bitmasks, brute force, geometry, sortings	2500	x1249
333D	Characteristics of Rectangles binary search, bitmasks, brute force, implementation, sortings	2100	x2239
325B	Stadium and Games binary search, math	1800	x1674
321A	Ciel and Robot binary search, implementation, math	1700	x3901
314D	Sereja and Straight Lines binary search, data structures, geometry, sortings, two pointers	2500	x577
314B	Sereja and Periods binary search, dfs and similar, strings	2000	x1618
309E	Sheep binary search, greedy	2900	x299
309C	Memory for Arrays binary search, bitmasks, greedy	1900	x1493
309A	Morning run binary search, math, two pointers	2000	x530
302B	Eugeny and Play List binary search, implementation, two pointers	1200	x9385
301B	Yaroslav and Time binary search, graphs, shortest paths	2100	x2794
300E	Empire Strikes Back binary search, math, number theory	2300	x1102
287B	Pipeline binary search, math	1700	x11526
279B	Books binary search, brute force, implementation, two pointers	1400	x72321
274A	k-Multiple Free Set binary search, greedy, sortings	1500	x10811
271B	Prime Matrix binary search, brute force, math, number theory	1300	x15436
260E	Dividing Kingdom binary search, brute force, data structures	2500	x509
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1986
255D	Mr. Bender and Square binary search, implementation, math	1800	x2196
253E	Printer binary search, data structures, implementation, sortings	2200	x585
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x12361
251A	Points on Line binary search, combinatorics, two pointers	1300	x21320
248D	Sweets for Everyone! binary search, greedy, implementation	2300	x529
248C	Robo-Footballer binary search, geometry	2000	x902
246E	Blood Cousins Return binary search, data structures, dfs and similar, dp, sortings	2400	x4512
245F	Log Stream Analysis binary search, brute force, implementation, strings	2000	x976
241B	Friends binary search, bitmasks, data structures, math	2700	x982
237C	Primes on Interval binary search, number theory, two pointers	1600	x6641
233B	Non-square Equation binary search, brute force, math	1400	x8282
232D	Fence binary search, data structures, string suffix structures	2900	x523
232A	Cycles binary search, constructive algorithms, graphs, greedy	1600	x2841
231C	To Add or Not to Add binary search, sortings, two pointers	1600	x9689
230B	T-primes binary search, implementation, math, number theory	1300	x95664
229B	Planets binary search, data structures, graphs, shortest paths	1700	x5785

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