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Solve any Codeforces or AtCoder problem
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1949BCharming Meals1500binary search, brute force, greedy1949CAnnual Ants' Gathering1900dfs and similar, dp, greedy1949FDating2200greedy, sortings, trees1949GScooter2300graphs, greedy1949IDisks1800dfs and similar, geometry, graph matchings1950DProduct of Binary Decimals1100brute force, dp, implementation1950F0, 1, 2, Tree!1700bitmasks, brute force, greedy1950GShuffling Songs1900bitmasks, dfs and similar, dp1951BBattle Cows1200binary search, data structures, greedy1951CTicket Hoarding1400greedy, math, sortings1951DBuying Jewels2000constructive algorithms, greedy, math1951ENo Palindromes2000brute force, constructive algorithms, divide and conquer1954BMake It Ugly1200implementation, math1954CLong Multiplication1200greedy, math, number theory1954DColored Balls1800combinatorics, dp, math1954EChain Reaction2200binary search, data structures, dsu1955CInhabitant of the Deep Sea1300greedy, implementation, math1955DInaccurate Subsequence Search1400data structures, two pointers1955ELong Inversions1700brute force, greedy, implementation1955FUnfair Game1800dp, games, greedy1955GGCD on a grid1900brute force, dfs and similar, dp1955HThe Most Reckless Defense2300bitmasks, brute force, constructive algorithms1958A1-3-51100*special, dp1958BClock in the Pool1400*special, math1965AEverything Nim1400games, greedy, math1965BMissing Subsequence Sum1800bitmasks, constructive algorithms, greedy1965CFolding Strip2300constructive algorithms, greedy, strings1969BShifts and Sorting1000constructive algorithms, greedy1969CMinimizing the Sum1700dp, implementation1969DShop Game1900data structures, greedy, math1969EUnique Array2400binary search, data structures, divide and conquer1971DBinary Cut1100dp, greedy, implementation1971EFind the Car1500binary search, math, sortings1971FCircle Perimeter1600binary search, brute force, dfs and similar1971H±121002-sat, dfs and similar, graphs1975B378QAQ and Mocha's Array1000brute force, greedy, math1975CChamo and Mocha's Array1200binary search, brute force, greedy1975DPaint the Tree1700brute force, dfs and similar, dp1975EChain Queries2100binary search, data structures, dfs and similar1978CManhattan Permutations1300constructive algorithms, data structures, greedy1978DElections1600data structures, greedy, implementation1978EComputing Machine2000brute force, data structures, dp1978FLarge Graph2400data structures, dfs and similar, dsu1979BXOR Sequences1000bitmasks, greedy1979CEarning on Bets1200binary search, combinatorics, constructive algorithms1979DFixing a Binary String1800bitmasks, brute force, constructive algorithms1979EManhattan Triangle2400binary search, constructive algorithms, data structures197APlate Game1600constructive algorithms, games, math197BLimit1400math1980CSofia and the Lost Operations1300constructive algorithms, greedy
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