Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Codeforces Round 974 (Div. 3)
13:54:20
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1375G	Tree Modification brute force, constructive algorithms, dfs and similar, graph matchings, graphs, trees	2800	x1907
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x2229
1375E	Inversion SwapSort constructive algorithms, greedy, sortings	2500	x3039
1375D	Replace by MEX brute force, constructive algorithms, sortings	1900	x9163
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x21092
1375B	Neighbor Grid constructive algorithms, greedy	1200	x17247
1375A	Sign Flipping constructive algorithms, math	1100	x18338
1374F	Cyclic Shifts Sorting brute force, constructive algorithms, implementation, sortings	2400	x1293
1374E2	Reading Books (hard version) data structures, greedy, implementation, sortings, ternary search, two pointers	2500	x924
1374E1	Reading Books (easy version) data structures, greedy, sortings	1600	x14008
1374D	Zero Remainder Array math, sortings, two pointers	1400	x23657
1374C	Move Brackets greedy, strings	1000	x46415
1374B	Multiply by 2, divide by 6 math	900	x49888
1374A	Required Remainder math	800	x53508
1373G	Pawns data structures, divide and conquer, greedy	2600	x789
1373F	Network Coverage binary search, constructive algorithms, data structures, greedy	2400	x1662
1373E	Sum of Digits brute force, constructive algorithms, dp, greedy	2200	x2729
1373D	Maximum Sum on Even Positions divide and conquer, dp, greedy, implementation	1600	x15580
1373C	Pluses and Minuses math	1300	x18339
1373B	01 Game games	900	x35543
1373A	Donut Shops greedy, implementation, math	1000	x26922
1372F	Omkar and Modes binary search, divide and conquer, interactive	2700	x443
1372E	Omkar and Last Floor dp, greedy, two pointers	2900	x1180
1372D	Omkar and Circle brute force, dp, games, greedy	2100	x5378
1372C	Omkar and Baseball constructive algorithms, math	1500	x17795
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x27863
1372A	Omkar and Completion constructive algorithms, implementation	800	x31889
1371F	Raging Thunder data structures, divide and conquer, implementation	2800	x614
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2340
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x5225
1371D	Grid-00100 constructive algorithms, greedy, implementation	1600	x12976
1371C	A Cookie for You greedy, implementation, math	1300	x20509
1371B	Magical Calendar math	1200	x19140
1371A	Magical Sticks math	800	x45890
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1471
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1590
1370E	Binary Subsequence Rotation binary search, constructive algorithms, data structures, greedy	2100	x4873
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x9608
1370C	Number Game games, math, number theory	1400	x24500
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23650
1370A	Maximum GCD greedy, implementation, math, number theory	800	x51758
1369F	BareLee dfs and similar, dp, games	2700	x645
1369E	DeadLee data structures, dfs and similar, greedy, implementation, sortings	2400	x2239
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8599
1369C	RationalLee greedy, math, sortings, two pointers	1400	x19558
1369B	AccurateLee greedy, implementation, strings	1200	x24374
1369A	FashionabLee geometry, math	800	x36461
1368H2	Breadboard Capacity (hard version)	3500	x226
1368H1	Breadboard Capacity (easy version) dp, flows, greedy	3300	x349
1368G	Shifting Dominoes data structures, geometry, graphs, trees	3200	x592
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x1039
1368E	Ski Accidents constructive algorithms, graphs, greedy	2500	x2208
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11771
1368C	Even Picture constructive algorithms	1500	x13316
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x19682
1368A	C+= brute force, greedy, implementation, math	800	x39069
1367F2	Flying Sort (Hard Version) binary search, data structures, dp, greedy, sortings, two pointers	2400	x1656
1367F1	Flying Sort (Easy Version) dp, greedy, two pointers	2100	x3253
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5431
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x8320
1367C	Social Distance constructive algorithms, greedy, math	1300	x23445
1367B	Even Array greedy, math	800	x53289
1367A	Short Substrings implementation, strings	800	x57188
1366G	Construct the String data structures, dp, strings	2700	x544
1366F	Jog Around The Graph binary search, dp, geometry, graphs	2700	x802
1366E	Two Arrays binary search, brute force, combinatorics, constructive algorithms, dp, two pointers	2100	x4265
1366D	Two Divisors constructive algorithms, math, number theory	2000	x10461
1366C	Palindromic Paths greedy, math	1500	x13560
1366B	Shuffle math, two pointers	1300	x20926
1366A	Shovels and Swords binary search, greedy, math	1100	x30004
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x1159
1365F	Swaps Again constructive algorithms, implementation, sortings	2100	x4437
1365E	Maximum Subsequence Value brute force, constructive algorithms	1900	x7826
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x17190
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x23054
1365B	Trouble Sort constructive algorithms, implementation	1300	x26795
1365A	Matrix Game games, greedy, implementation	1100	x24054
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1418
1364D	Ehab's Last Corollary constructive algorithms, dfs and similar, graphs, greedy, implementation, trees	2100	x4360
1364C	Ehab and Prefix MEXs brute force, constructive algorithms, greedy	1600	x13142
1364B	Most socially-distanced subsequence greedy, two pointers	1300	x19775
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x27962
1363F	Rotating Substrings dp, strings	2600	x1492
1363E	Tree Shuffling dfs and similar, dp, greedy, trees	2000	x6801
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x4075
1363C	Game On Leaves games, trees	1600	x18642
1363B	Subsequence Hate implementation, strings	1400	x23562
1363A	Odd Selection brute force, implementation, math	1200	x35731
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x18234
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x19060
1362A	Johnny and Ancient Computer implementation	1000	x23959
1361F	Johnny and New Toy data structures, implementation, math	3300	x154
1361E	James and the Chase dfs and similar, graphs, probabilities, trees	3000	x688
1361D	Johnny and James greedy, implementation, math, trees	2900	x317
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1624
1361B	Johnny and Grandmaster greedy, implementation, math, sortings	1900	x3621
1361A	Johnny and Contribution constructive algorithms, graphs, greedy, sortings	1700	x8414
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4562
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x7731
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x12367