Problemset - Codeforces

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Problems

#	Name
1968A	Maximize? brute force, math, number theory	800	x34720
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x103
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x217
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1783
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3953
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x13357
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x12547
1965A	Everything Nim games, greedy, math, sortings	1400	x13808
1958B	Clock in the Pool *special problem, math	1400	x905
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1280
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4535
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x9729
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x888
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1470
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3951
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x12977
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4579
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x7158
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x21382
1955A	Yogurt Sale math	800	x43806
1954F	Unique Strings combinatorics, dp, math	3100	x256
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x2322
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x6241
1954C	Long Multiplication greedy, math, number theory	1200	x19535
1954B	Make It Ugly implementation, math	1200	x18680
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x24279
1952G	Mathematician Takeover binary search, dfs and similar, math		x1033
1952E	Sweep Line combinatorics, games, math		x258
1951G	Clacking Balls combinatorics, math, probabilities	3100	x337
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3665
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x5442
1951C	Ticket Hoarding greedy, math, sortings	1400	x11741
1951A	Dual Trigger constructive algorithms, greedy, math	900	x19824
1950C	Clock Conversion implementation, math	800	x40182
1949K	Make Triangle constructive algorithms, math	2800	x330
1949H	Division Avoidance greedy, math	3100	x127
1949E	Damage per Second brute force, math	2900	x105
1948F	Rare Coins combinatorics, math, probabilities	2500	x1337
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2580
1946B	Maximum Sum dp, greedy, math	1100	x20556
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x678
1945B	Fireworks math, number theory	900	x22834
1945A	Setting up Camp greedy, math	800	x27826
1944A	Destroying Bridges graphs, greedy, math	800	x23873
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1513
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3890
1942G	Bessie and Cards combinatorics, dp, math	2800	x456
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x702
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x6201
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x11038
1942B	Bessie and MEX constructive algorithms, math	1100	x14032
1942A	Farmer John's Challenge constructive algorithms, math	800	x17316
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x30040
1941A	Rudolf and the Ticket brute force, math	800	x42681
1937A	Shuffle Party implementation, math	800	x23246
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x125
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2964
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7525
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1380
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x8319
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6862
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x19096
1934A	Too Min Too Max greedy, math	800	x25539
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x987
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x11344
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x20453
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x22773
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x33075
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x38368
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1095
1932E	Final Countdown implementation, math, number theory	1600	x8321
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x15921
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2877
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x16184
1931D	Divisible Pairs combinatorics, math, number theory	1300	x19279
1931C	Make Equal Again brute force, greedy, math	1000	x29401
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1153
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x15441
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1821
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1721
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4857
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x15096
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x25422
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x31754
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x244
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1742
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x4326
1928C	Physical Education Lesson brute force, math, number theory	1600	x8679
1928A	Rectangle Cutting geometry, math	800	x22794
1927G	Paint Charges data structures, dp, greedy, math	2300	x1707
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x14199
1927C	Choose the Different Ones! brute force, greedy, math	1000	x28206
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12084
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3700
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x20277
1924D	Balanced Subsequences combinatorics, dp, math	2700	x1026
1924C	Fractal Origami geometry, math, matrices	2400	x1179
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2608
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7807
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5758