Problemset - Codeforces

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Problems

#	Name
2003E1	Turtle and Inversions (Easy Version) brute force, divide and conquer, dp, greedy, math	2600	x724
2003D2	Turtle and a MEX Problem (Hard Version) dfs and similar, dp, graphs, greedy, implementation, math	2100	x3999
2003D1	Turtle and a MEX Problem (Easy Version) greedy, math	1500	x11133
2002F2	Court Blue (Hard Version) brute force, dp, math, number theory	2800	x433
2002F1	Court Blue (Easy Version) brute force, dfs and similar, dp, math, number theory	2600	x822
2002C	Black Circles brute force, geometry, greedy, math	1200	x15053
2002A	Distanced Coloring constructive algorithms, implementation, math	800	x19428
2001E1	Deterministic Heap (Easy Version) combinatorics, dp, math, trees	2400	x1275
2000F	Color Rows and Columns dp, greedy, implementation, math	1900	x5396
2000E	Photoshoot for Gorillas combinatorics, data structures, greedy, math	1400	x13267
2000A	Primary Task implementation, math, strings	800	x37324
1999F	Expected Median combinatorics, math	1500	x10406
1999E	Triple Operations dp, implementation, math	1300	x18657
1999A	A+B Again? implementation, math	800	x56066
1998B	Minimize Equal Sum Subarrays constructive algorithms, math, number theory	1000	x23797
1998A	Find K Distinct Points with Fixed Center constructive algorithms, implementation, math	800	x23946
1997F	Chips on a Line brute force, combinatorics, dp, greedy, math	2700	x901
1996F	Bomb binary search, greedy, math	1900	x4788
1996E	Decode combinatorics, data structures, implementation, math	1600	x9823
1996D	Fun binary search, brute force, combinatorics, math, number theory	1500	x15993
1996A	Legs binary search, math, ternary search	800	x43283
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x8586
1995B2	Bouquet (Hard Version) binary search, data structures, greedy, math, sortings, two pointers	1700	x8795
1995A	Diagonals brute force, greedy, implementation, math	800	x24242
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings	3500	x706
1994G	Minecraft bitmasks, brute force, dp, graphs, math	2600	x1275
1994E	Wooden Game bitmasks, greedy, math, trees	2000	x4519
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees	1900	x5774
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x16560
1993F2	Dyn-scripted Robot (Hard Version) chinese remainder theorem, math, number theory	2800	x418
1993F1	Dyn-scripted Robot (Easy Version) brute force, chinese remainder theorem, constructive algorithms, math, number theory	2400	x1001
1993C	Light Switches implementation, math	1400	x13641
1992G	Ultra-Meow combinatorics, dp, math	2000	x3142
1992E	Novice's Mistake brute force, constructive algorithms, implementation, math, strings	1700	x9169
1992C	Gorilla and Permutation constructive algorithms, math	900	x29145
1992B	Angry Monk greedy, math, sortings	800	x34308
1992A	Only Pluses brute force, constructive algorithms, greedy, math, sortings	800	x41380
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x505
1991F	Triangle Formation brute force, greedy, implementation, math, sortings	2200	x2327
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6678
1991C	Absolute Zero constructive algorithms, greedy, math	1300	x14612
1990C	Mad MAD Sum brute force, greedy, math	1500	x11646
1989E	Distance to Different combinatorics, dp, math	2300	x1994
1989D	Smithing Skill brute force, data structures, dp, greedy, math, sortings, two pointers	1900	x5989
1989C	Two Movies greedy, math	1400	x18554
1988F	Heartbeat combinatorics, dp, fft, math	3000	x214
1988A	Split the Multiset brute force, greedy, implementation, math	900	x23286
1987A	Upload More RAM greedy, math	800	x25389
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x1093
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x1501
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x8863
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x15243
1986A	X Axis brute force, geometry, math, sortings	800	x40613
1985G	D-Function combinatorics, math, number theory	1600	x9451
1985E	Secret Box brute force, combinatorics, math	1200	x19975
1985D	Manhattan Circle implementation, math	900	x34698
1985B	Maximum Multiple Sum brute force, math, number theory	800	x46494
1984F	Reconstruction brute force, dp, math	2500	x943
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x3300
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x7439
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x16686
1984B	Large Addition implementation, math	1100	x18335
1983E	I Love Balls combinatorics, math, probabilities	2300	x2020
1983D	Swap Dilemma constructive algorithms, data structures, divide and conquer, greedy, math, sortings	1700	x8244
1983B	Corner Twist constructive algorithms, greedy, implementation, math	1200	x16143
1983A	Array Divisibility constructive algorithms, math	800	x25708
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1602
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x7184
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x16996
1982A	Soccer greedy, implementation, math, sortings	800	x25187
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5369
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13770
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math	800	x22329
1980F2	Field Division (hard version) math, sortings	2400	x1007
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3759
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x10563
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x14349
1980A	Problem Generator math	800	x40766
1978D	Elections data structures, greedy, implementation, math	1600	x11356
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x15008
1978B	New Bakery binary search, greedy, math, ternary search	800	x22410
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6786
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17689
1977A	Little Nikita math	800	x33204
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x1046
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x235
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x833
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x17912
1974A	Phone Desktop greedy, math	800	x33307
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x808
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1924
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x8407
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14163
1973A	Chess For Three brute force, dp, implementation, math	900	x24629
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x10061
1971E	Find the Car binary search, math, sortings	1500	x14383
1969D	Shop Game data structures, greedy, math, sortings	1900	x4654
1969A	Two Friends constructive algorithms, implementation, math	800	x20006
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1978
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x15001