Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
21:44:13
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Problems

#	Name
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x812
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14780
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x16293
1519B	The Cake Is a Lie dp, math	800	x30248
1519A	Red and Blue Beans math	800	x28427
1517H	Fly Around the World dp, geometry	3500	x66
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x424
1517F	Reunion combinatorics, dp, trees	3200	x451
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x959
1517D	Explorer Space dp, graphs, shortest paths	1800	x7428
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13166
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x13124
1517A	Sum of 2050 greedy, math	800	x25192
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x826
1516D	Cut binary search, data structures, dp, graphs, number theory, two pointers	2100	x4150
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11639
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18495
1516A	Tit for Tat greedy	800	x23196
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x239
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x221
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x961
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1712
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3420
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11230
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x16714
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24424
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20085
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x591
1514D	Cut and Stick binary search, data structures, greedy, implementation, sortings	2000	x4136
1514C	Product 1 Modulo N greedy, number theory	1600	x14558
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x23543
1514A	Perfectly Imperfect Array math, number theory	800	x23893
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1207
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1428
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5140
1513C	Add One dp, matrices	1600	x13459
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14074
1513A	Array and Peaks constructive algorithms, implementation	800	x19225
1512G	Short Task brute force, dp, math, number theory	1700	x7926
1512F	Education brute force, dp, greedy, implementation	1900	x6009
1512E	Permutation by Sum brute force, greedy, math	1600	x10147
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x21984
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x19680
1512B	Almost Rectangle implementation	800	x25119
1512A	Spy Detected! brute force, implementation	800	x61174
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x712
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x422
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2488
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11172
1511C	Yet Another Card Deck brute force, data structures, implementation, trees	1100	x22648
1511B	GCD Length constructive algorithms, math, number theory	1100	x22193
1511A	Review Site greedy	800	x27278
1510K	King's Task brute force, graphs, implementation	1200	x5318
1510J	Japanese Game constructive algorithms, math	2700	x511
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x454
1510H	Hard Optimization dp	3200	x98
1510G	Guide	2100	x1264
1510F	Fiber Shape	2800	x58
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x244
1510D	Digits dp, math, number theory	2100	x1809
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x210
1510B	Button Lock flows, graph matchings, graphs	2600	x723
1510A	ASCII Automata Art	3100	x152
1509C	The Sports Festival dp, greedy	1800	x12017
1509B	TMT Document greedy	1100	x21238
1509A	Average Height constructive algorithms	800	x25797
1508F	Optimal Encoding brute force, data structures	3500	x120
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x331
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x535
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1439
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3874
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x6066
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x4140
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3127
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x12760
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x21100
1506C	Double-ended Strings brute force, implementation, strings	1000	x23917
1506B	Partial Replacement greedy, implementation	1100	x19996
1506A	Strange Table math	800	x30272
1505I	Mysterious language again, seriously? *special problem	2200	x546
1505H	L BREAK into program *special problem	2500	x492
1505G	Encoded message *special problem, implementation	2600	x297
1505F	Math *special problem, math	2200	x1480
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1732
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x746
1505C	Fibonacci Words *special problem, implementation	1400	x6325
1505B	DMCA *special problem, implementation, number theory	1600	x6033
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x14114
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x17693
1504A	Déjà Vu constructive algorithms, strings	800	x21495
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x137
1503E	2-Coloring combinatorics, dp, math	3100	x598
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x980
1503C	Travelling Salesman Problem binary search, data structures, dp, greedy, shortest paths, sortings, two pointers	2200	x3236
1503B	3-Coloring constructive algorithms, games, interactive	1700	x6877
1503A	Balance the Bits constructive algorithms, greedy	1600	x13125
1501B	Napoleon Cake dp, implementation, sortings	900	x18650
1501A	Alexey and Train implementation	800	x11545
1500F	Cupboards Jumps dp	3500	x334
1500E	Subset Trick binary search, data structures	3300	x215