Problemset - Codeforces

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EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)
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Problems

#	Name
1971G	XOUR data structures, dsu, sortings	1700	x7934
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x8484
1971E	Find the Car binary search, math, sortings	1500	x12054
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x22816
1971C	Clock and Strings implementation	900	x28567
1971B	Different String implementation, strings	800	x32386
1971A	My First Sorting Problem implementation, sortings	800	x39143
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x253
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees	2200	x445
1970G1	Min-Fund Prison (Easy) dfs and similar, trees	1900	x1024
1970F3	Playing Quidditch (Hard) implementation	2300	x300
1970F2	Playing Quidditch (Medium) implementation	2300	x290
1970F1	Playing Quidditch (Easy) implementation	2300	x361
1970E3	Trails (Hard) dp, matrices	2200	x493
1970E2	Trails (Medium) dp, matrices	2000	x902
1970E1	Trails (Easy) dp	1800	x1467
1970D3	Arithmancy (Hard) interactive	3100	x85
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x162
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x480
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x1083
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x1861
1970C1	Game on Tree (Easy) games	1400	x2432
1970B3	Exact Neighbours (Hard) constructive algorithms	2300	x374
1970B2	Exact Neighbours (Medium) constructive algorithms	2100	x596
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x851
1970A3	Balanced Unshuffle (Hard) constructive algorithms, trees	2400	x378
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees	2400	x377
1970A1	Balanced Shuffle (Easy) implementation, sortings	1000	x3419
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x192
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x1136
1969D	Shop Game data structures, greedy, math, sortings	1900	x3905
1969C	Minimizing the Sum dp, implementation	1700	x7276
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x16775
1969A	Two Friends constructive algorithms, implementation, math	800	x18279
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1648
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3656
1968F	Equal XOR Segments binary search, data structures	1800	x4707
1968E	Cells Arrangement constructive algorithms	1600	x9118
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x13302
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x22265
1968B	Prefiquence greedy, two pointers	800	x25655
1968A	Maximize? brute force, math, number theory	800	x30554
1967F	Next and Prev brute force, data structures, implementation	3200	x49
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x81
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x164
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x532
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1461
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3474
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x11633
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x10853
1966B	Rectangle Filling constructive algorithms, implementation	1100	x13414
1966A	Card Exchange constructive algorithms, games, greedy	800	x16325
1965F	Conference data structures, flows	3300	x125
1965E	Connected Cubes constructive algorithms, games	3100	x206
1965D	Missing Subarray Sum constructive algorithms	2900	x314
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1612
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x5799
1965A	Everything Nim games, greedy, math, sortings	1400	x11854
1958J	Necromancer *special problem	3200	x19
1958I	Equal Trees *special problem, graphs, meet-in-the-middle	3100	x25
1958H	Composite Spells *special problem, dp	2600	x68
1958G	Observation Towers *special problem	2400	x95
1958F	Narrow Paths *special problem, combinatorics	2000	x162
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x220
1958D	Staircase *special problem	1600	x410
1958C	Firewood *special problem	1500	x558
1958B	Clock in the Pool *special problem, math	1400	x724
1958A	1-3-5 *special problem, dp	1100	x1316
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x336
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x395
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1099
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4008
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8528
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x16447
1957A	Stickogon constructive algorithms, greedy	800	x21626
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x300
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x739
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1326
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3505
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11687
1956B	Nene and the Card Game games, greedy	800	x20053
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x20238
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1109
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3902
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6368
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7775
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x13904
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x19302
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x25539
1955A	Yogurt Sale math	800	x39361
1954F	Unique Strings combinatorics, dp, math	3100	x228
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1970
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5399
1954C	Long Multiplication greedy, math, number theory	1200	x17491
1954B	Make It Ugly implementation, math	1200	x16922
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x22042
1953A	Accuracy-Preserving Summation Algorithm *special problem
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x720
1952I	Dark Matter bitmasks, geometry		x402
1952H	Palindrome implementation, strings		x380