Problemset - Codeforces

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

#	Name
1372C	Omkar and Baseball constructive algorithms, math	1500	x19083
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x36341
1372A	Omkar and Completion constructive algorithms, implementation	800	x33479
1371F	Raging Thunder data structures, divide and conquer, implementation	2800	x691
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2513
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x5527
1371D	Grid-00100 constructive algorithms, greedy, implementation	1600	x13697
1371C	A Cookie for You greedy, implementation, math	1300	x21365
1371B	Magical Calendar math	1200	x19608
1371A	Magical Sticks math	800	x51240
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1667
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1784
1370E	Binary Subsequence Rotation binary search, constructive algorithms, data structures, greedy	2100	x5220
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x10907
1370C	Number Game games, math, number theory	1400	x27115
1370B	GCD Compression constructive algorithms, math, number theory	1100	x25007
1370A	Maximum GCD greedy, implementation, math, number theory	800	x64366
1369F	BareLee dfs and similar, dp, games	2700	x716
1369E	DeadLee data structures, dfs and similar, greedy, implementation, sortings	2400	x2454
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x9225
1369C	RationalLee greedy, math, sortings, two pointers	1400	x20868
1369B	AccurateLee greedy, implementation, strings	1200	x25569
1369A	FashionabLee geometry, math	800	x39118
1368H2	Breadboard Capacity (hard version)	3500	x281
1368H1	Breadboard Capacity (easy version) dp, flows, greedy	3300	x456
1368G	Shifting Dominoes data structures, geometry, graphs, trees	3200	x676
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x1105
1368E	Ski Accidents constructive algorithms, graphs, greedy	2500	x2363
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x13638
1368C	Even Picture constructive algorithms	1500	x14030
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x21358
1368A	C+= brute force, greedy, implementation, math	800	x46214
1367F2	Flying Sort (Hard Version) binary search, data structures, dp, greedy, sortings, two pointers	2400	x1867
1367F1	Flying Sort (Easy Version) dp, greedy, two pointers	2100	x3623
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5813
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x8776
1367C	Social Distance constructive algorithms, greedy, math	1300	x25101
1367B	Even Array greedy, math	800	x63902
1367A	Short Substrings implementation, strings	800	x67662
1366G	Construct the String data structures, dp, strings	2700	x619
1366F	Jog Around The Graph binary search, dp, geometry, graphs	2700	x894
1366E	Two Arrays binary search, brute force, combinatorics, constructive algorithms, dp, two pointers	2100	x4622
1366D	Two Divisors constructive algorithms, math, number theory	2000	x12334
1366C	Palindromic Paths greedy, math	1500	x14260
1366B	Shuffle math, two pointers	1300	x27919
1366A	Shovels and Swords binary search, greedy, math	1100	x32989
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x1414
1365F	Swaps Again constructive algorithms, implementation, sortings	2100	x4752
1365E	Maximum Subsequence Value brute force, constructive algorithms	1900	x8317
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x20795
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x24974
1365B	Trouble Sort constructive algorithms, implementation	1300	x28826
1365A	Matrix Game games, greedy, implementation	1100	x25043
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1550
1364D	Ehab's Last Corollary constructive algorithms, dfs and similar, graphs, greedy, implementation, trees	2100	x4957
1364C	Ehab and Prefix MEXs brute force, constructive algorithms, greedy	1600	x14345
1364B	Most socially-distanced subsequence greedy, two pointers	1300	x26144
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x31352
1363F	Rotating Substrings dp, strings	2600	x1735
1363E	Tree Shuffling dfs and similar, dp, greedy, trees	2000	x7494
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x4413
1363C	Game On Leaves games, trees	1600	x21066
1363B	Subsequence Hate implementation, strings	1400	x26111
1363A	Odd Selection brute force, implementation, math	1200	x40384
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x23682
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x21031
1362A	Johnny and Ancient Computer implementation	1000	x34022
1361F	Johnny and New Toy data structures, implementation, math	3300	x172
1361E	James and the Chase dfs and similar, graphs, probabilities, trees	3000	x987
1361D	Johnny and James greedy, implementation, math, trees	2900	x340
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1834
1361B	Johnny and Grandmaster greedy, implementation, math, sortings	1900	x3855
1361A	Johnny and Contribution constructive algorithms, graphs, greedy, sortings	1700	x8832
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4861
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x8347
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x13517
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x27984
1360D	Buying Shovels math, number theory	1300	x42949
1360C	Similar Pairs constructive algorithms, graph matchings, greedy, sortings	1100	x36765
1360B	Honest Coach greedy, sortings	800	x53685
1360A	Minimal Square greedy, math	800	x57062
1359F	RC Kaboom Show binary search, brute force, data structures, geometry, math	2900	x583
1359E	Modular Stability combinatorics, math, number theory	2000	x6731
1359D	Yet Another Yet Another Task data structures, dp, implementation, two pointers	2000	x10725
1359C	Mixing Water binary search, math	1700	x15294
1359B	New Theatre Square brute force, dp, greedy, implementation, two pointers	1000	x29382
1359A	Berland Poker brute force, greedy, math	1000	x31722
1358F	Tasty Cookie binary search, constructive algorithms, greedy, implementation	2700	x502
1358E	Are You Fired? constructive algorithms, data structures, greedy, implementation	2400	x2451
1358D	The Best Vacation binary search, brute force, greedy, implementation, two pointers	1900	x8721
1358C	Celex Update math	1600	x18342
1358B	Maria Breaks the Self-isolation greedy, sortings	1000	x25873
1358A	Park Lighting greedy, math	800	x43169
1357E2	Root of quantum Fourier transform *special problem		x53
1357E1	Power of quantum Fourier transform *special problem		x195
1357D5	Quantum Classification - Dataset 7 *special problem		x83
1357D4	Quantum Classification - Dataset 6 *special problem		x86
1357D3	Quantum Classification - Dataset 5 *special problem		x106
1357D2	Quantum Classification - Dataset 4 *special problem		x113
1357D1	Quantum Classification - Dataset 3 *special problem		x126

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