Problemset - Codeforces

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Codeforces Round #720 (Div. 2)
31:18:17
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Problems

#	Name
1520G	To Go Or Not To Go? dfs and similar, graphs, greedy, shortest paths		x35
1520F2	Guess the K-th Zero (Hard version) binary search, data structures, interactive		x3
1520F1	Guess the K-th Zero (Easy version) binary search, interactive		x17
1520E	Arranging The Sheep dp, greedy, math		x34
1520D	Same Differences data structures, hashing, math		x131
1520C	Not Adjacent Matrix constructive algorithms		x121
1520B	Ordinary Numbers brute force, math, number theory		x1326
1520A	Do Not Be Distracted! brute force, implementation		x7684
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x84
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x399
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x6341
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x8168
1519B	The Cake Is a Lie dp, math	800	x16320
1519A	Red and Blue Beans math	800	x17313
1517H	Fly Around the World dp, geometry	3500	x15
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x135
1517F	Reunion combinatorics, dp, trees	3200	x129
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x612
1517D	Explorer Space dp, graphs, shortest paths	1800	x4183
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x7680
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x8841
1517A	Sum of 2050 greedy, math	800	x16429
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x411
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x2026
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x6107
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x9122
1516A	Tit for Tat greedy	800	x15925
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x46
1515H	Phoenix and Bits bitmasks, brute force, data structures	3500	x48
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x410
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x718
1515E	Phoenix and Computers combinatorics, dp, math	2200	x1590
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x6200
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x8365
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x12379
1515A	Phoenix and Gold constructive algorithms, math	800	x14062
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x253
1514D	Cut and Stick binary search, data structures, greedy, implementation, sortings	2000	x2498
1514C	Product 1 Modulo N greedy, number theory	1600	x6996
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x11063
1514A	Perfectly Imperfect Array math, number theory	800	x16141
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x486
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x878
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x2581
1513C	Add One dp, matrices	1600	x6539
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x7609
1513A	Array and Peaks constructive algorithms, implementation	800	x14593
1512G	Short Task brute force, dp, math, number theory	1700	x3626
1512F	Education brute force, dp, greedy, implementation	1900	x3147
1512E	Permutation by Sum brute force, greedy, math	1600	x5251
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x10609
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x10758
1512B	Almost Rectangle implementation	800	x17343
1512A	Spy Detected! brute force, implementation	800	x23426
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x299
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x164
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x1583
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x6404
1511C	Yet Another Card Deck brute force, data structures, implementation, trees	1100	x13249
1511B	GCD Length constructive algorithms, math, number theory	1100	x13300
1511A	Review Site greedy	800	x18249
1510K	King's Task brute force, graphs, implementation	1200	x2830
1510J	Japanese Game constructive algorithms, math	2700	x187
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x221
1510H	Hard Optimization dp	3200	x37
1510G	Guide	2100	x862
1510F	Fiber Shape	2800	x22
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x120
1510D	Digits dp, math, number theory	2100	x1021
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x96
1510B	Button Lock flows, graph matchings, graphs	2600	x376
1510A	ASCII Automata Art	3100	x81
1509C	The Sports Festival dp, greedy	1800	x6090
1509B	TMT Document greedy	1100	x13218
1509A	Average Height constructive algorithms	800	x17800
1508F	Optimal Encoding brute force, data structures	3500	x26
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x143
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x186
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x712
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x2002
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x3705
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x2559
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x2028
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x7325
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x10627
1506C	Double-ended Strings brute force, implementation, strings	1000	x14332
1506B	Partial Replacement greedy, implementation	1100	x13688
1506A	Strange Table math	800	x20599
1505I	Mysterious language again, seriously? *special problem	2200	x230
1505H	L BREAK into program *special problem	2500	x253
1505G	Encoded message *special problem, implementation	2600	x170
1505F	Math *special problem, math	2200	x873
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1286
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x335
1505C	Fibonacci Words *special problem, implementation	1400	x4022
1505B	DMCA *special problem, implementation, number theory	1600	x3673
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x8740
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x10743
1504A	Déjà Vu constructive algorithms, strings	800	x15003
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x41

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