Problemset - Codeforces

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Codeforces Round (Div. 3)
7 days

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Problems

#	Name
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x7481
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11969
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x24621
1360D	Buying Shovels math, number theory	1300	x31375
1360C	Similar Pairs constructive algorithms, graph matchings, greedy, sortings	1100	x31976
1360B	Honest Coach greedy, sortings	800	x46588
1360A	Minimal Square greedy, math	800	x48657
1359F	RC Kaboom Show binary search, brute force, data structures, geometry, math	2900	x401
1359E	Modular Stability combinatorics, math, number theory	2000	x5823
1359D	Yet Another Yet Another Task data structures, dp, implementation, two pointers	2000	x9088
1359C	Mixing Water binary search, math	1700	x13406
1359B	New Theatre Square brute force, dp, greedy, implementation, two pointers	1000	x27242
1359A	Berland Poker brute force, greedy, math	1000	x28976
1358F	Tasty Cookie binary search, constructive algorithms, greedy, implementation	2700	x438
1358E	Are You Fired? constructive algorithms, data structures, greedy, implementation	2400	x2136
1358D	The Best Vacation binary search, brute force, greedy, implementation, two pointers	1900	x8058
1358C	Celex Update math	1600	x17106
1358B	Maria Breaks the Self-isolation greedy, sortings	1000	x24718
1358A	Park Lighting greedy, math	800	x38457
1357E2	Root of quantum Fourier transform		x49
1357E1	Power of quantum Fourier transform		x191
1357D5	Quantum Classification - Dataset 7		x80
1357D4	Quantum Classification - Dataset 6		x83
1357D3	Quantum Classification - Dataset 5		x103
1357D2	Quantum Classification - Dataset 4		x110
1357D1	Quantum Classification - Dataset 3		x123
1357C2	Prepare superposition of basis states with the same parity		x301
1357C1	Prepare superposition of basis states with 0s		x346
1357B2	"Is the number divisible by 3?" oracle		x212
1357B1	"Is the bit string balanced?" oracle		x212
1357A7	Distinguish Y, XZ, -Y and -XZ		x180
1357A6	Distinguish four Pauli gates		x165
1357A5	Distinguish Rz(θ) from Ry(θ)		x238
1357A4	Distinguish Rz from R1		x348
1357A3	Distinguish H from X		x475
1357A2	Distinguish I, CNOTs and SWAP		x507
1357A1	Figure out direction of CNOT		x629
1356D2	Quantum Classification - 2 *special problem		x124
1356D1	Quantum Classification - 1 *special problem		x134
1356C	Prepare state \|01⟩ + \|10⟩ + \|11⟩ *special problem		x300
1356B2	Decrement *special problem		x280
1356B1	Increment *special problem		x280
1356A5	Distinguish Z from -Z *special problem		x328
1356A4	Distinguish I ⊗ X from CNOT *special problem		x456
1356A3	Distinguish Z from S *special problem		x458
1356A2	Distinguish I from Z *special problem		x485
1356A1	Distinguish I from X *special problem		x600
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x821
1355E	Restorer Distance binary search, greedy, math, sortings, ternary search	2100	x4795
1355D	Game With Array constructive algorithms, math	1400	x17550
1355C	Count Triangles binary search, implementation, math, two pointers	1800	x10310
1355B	Young Explorers dp, greedy, sortings	1200	x25055
1355A	Sequence with Digits brute force, implementation, math	1200	x25761
1354G	Find a Gift binary search, interactive, probabilities	2600	x751
1354F	Summoning Minions constructive algorithms, dp, flows, graph matchings, greedy, sortings	2500	x1037
1354E	Graph Coloring dfs and similar, dp, graphs	2100	x3123
1354D	Multiset binary search, data structures	1900	x8396
1354C2	Not So Simple Polygon Embedding binary search, brute force, geometry, math	2000	x5877
1354C1	Simple Polygon Embedding binary search, geometry, math, ternary search	1400	x15405
1354B	Ternary String binary search, dp, implementation, two pointers	1200	x29647
1354A	Alarm Clock math	900	x23422
1353F	Decreasing Heights brute force, dp	2200	x3111
1353E	K-periodic Garland brute force, dp, greedy	1900	x6857
1353D	Constructing the Array constructive algorithms, data structures, sortings	1600	x17532
1353C	Board Moves math	1000	x34501
1353B	Two Arrays And Swaps greedy, sortings	800	x48047
1353A	Most Unstable Array constructive algorithms, greedy, math	800	x39536
1352G	Special Permutation constructive algorithms	1600	x20142
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16498
1352E	Special Elements brute force, implementation, two pointers	1500	x19658
1352D	Alice, Bob and Candies implementation	1300	x25188
1352C	K-th Not Divisible by n binary search, math	1200	x51165
1352B	Same Parity Summands constructive algorithms, math	1200	x35959
1352A	Sum of Round Numbers implementation, math	800	x73826
1351C	Skier data structures, implementation	1400	x8320
1351B	Square? brute force, implementation, math	900	x16586
1351A	A+B (Trial Problem) implementation	800	x23146
1350B	Orac and Models dp, math, number theory	1400	x20992
1350A	Orac and Factors math	900	x25695
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x108
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x402
1349E	Slime and Hats constructive algorithms, dp, greedy	3500	x88
1349D	Slime and Biscuits math, probabilities	3200	x872
1349C	Orac and Game of Life dfs and similar, graphs, implementation, shortest paths	2000	x4289
1349B	Orac and Medians constructive algorithms, greedy, math	2000	x7829
1349A	Orac and LCM data structures, math, number theory	1600	x16244
1348F	Phoenix and Memory data structures, dfs and similar, graphs, greedy	2600	x781
1348E	Phoenix and Berries brute force, dp, greedy, math	2400	x2042
1348D	Phoenix and Science binary search, constructive algorithms, greedy, implementation, math	1900	x8583
1348C	Phoenix and Distribution constructive algorithms, greedy, sortings, strings	1600	x14292
1348B	Phoenix and Beauty constructive algorithms, data structures, greedy, sortings	1400	x24738
1348A	Phoenix and Balance greedy, math	800	x38724
1346I	Pac-Man 2.0 *special problem, dp	2900	x45
1346H	Game with Segments *special problem, data structures, games	2700	x48
1346G	Two IP Cameras *special problem, math, number theory	2300	x133
1346F	Dune II: Battle For Arrakis *special problem, data structures, greedy, math	2000	x221
1346E	Magic Tricks *special problem, dp, graphs	1700	x372
1346D	Constructing the Dungeon *special problem, graphs, greedy	1600	x483
1346C	Spring Cleaning *special problem, greedy, sortings	1600	x585
1346B	Boot Camp *special problem, greedy	1400	x1185