Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
39:24:08
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Problems

#	Name
142E	Help Greg the Dwarf 2 geometry	3000	x81
142D	Help Shrek and Donkey 2 games	2600	x350
142C	Help Caretaker brute force, dp	2300	x932
142B	Help General constructive algorithms, greedy, implementation	1800	x2228
142A	Help Farmer brute force, math	1600	x2639
141E	Clearing Up constructive algorithms, dp, dsu, graphs	2300	x1117
141D	Take-off Ramps graphs, shortest paths	2300	x910
141C	Queue constructive algorithms, greedy, sortings	1800	x2481
141B	Hopscotch geometry, math	1400	x5428
141A	Amusing Joke implementation, sortings, strings	800	x85421
140F	New Year Snowflake geometry, sortings	2600	x373
140E	New Year Garland combinatorics, dp	2600	x955
140D	New Year Contest greedy, sortings	1800	x2218
140C	New Year Snowmen binary search, data structures, greedy	1800	x4397
140B	New Year Cards brute force, greedy, implementation	1800	x1684
140A	New Year Table geometry, math	1700	x4167
139B	Wallpaper implementation, math	1600	x1315
139A	Petr and Book implementation	1000	x31881
138E	Hellish Constraints brute force, dp, two pointers	2900	x174
138D	World of Darkraft dp, games	2500	x499
138C	Mushroom Gnomes - 2 binary search, data structures, probabilities, sortings	2200	x875
138B	Digits Permutations greedy	1900	x1039
138A	Literature Lesson implementation	1600	x2397
137E	Last Chance data structures, implementation, strings	2000	x1249
137D	Palindromes dp, strings	1900	x1529
137C	History sortings	1500	x7264
137B	Permutation greedy	1000	x13803
137A	Postcards and photos implementation	900	x7255
136B	Ternary Logic implementation, math	1100	x4899
136A	Presents implementation	800	x121265
135E	Weak Subsequence combinatorics	3000	x307
135D	Cycle brute force, dfs and similar, implementation	2500	x301
135C	Zero-One constructive algorithms, games, greedy	1900	x1351
135B	Rectangle and Square brute force, geometry, math	1600	x2381
135A	Replacement greedy, implementation, sortings	1300	x7663
134C	Swaps constructive algorithms, graphs, greedy	2200	x477
134B	Pairs of Numbers brute force, dfs and similar, math, number theory	1900	x2061
134A	Average Numbers brute force, implementation	1200	x4065
133B	Unary implementation	1200	x8850
133A	HQ9+ implementation	900	x107780
132E	Bits of merry old England flows, graphs	2700	x534
132D	Constants in the language of Shakespeare constructive algorithms, dp, greedy	2100	x618
132C	Logo Turtle dp	1800	x2361
132B	Piet implementation	2100	x663
132A	Turing Tape implementation	1300	x2792
131F	Present to Mom binary search, two pointers	2000	x652
131E	Yet Another Task with Queens sortings	1700	x1867
131D	Subway dfs and similar, graphs	1600	x4725
131C	The World is a Theatre combinatorics, math	1400	x11283
131B	Opposites Attract implementation, math	1200	x7078
131A	cAPS lOCK implementation, strings	1000	x87410
130J	Date calculation *special problem	1800	x341
130I	Array sorting *special problem, sortings	2300	x168
130H	Balanced brackets *special problem	1600	x609
130G	CAPS LOCK ON *special problem	1700	x285
130F	Prime factorization *special problem	1600	x278
130E	Tribonacci numbers *special problem	1600	x296
130D	Exponentiation *special problem	1500	x394
130C	Decimal sum *special problem	1500	x503
130B	Gnikool Ssalg *special problem, implementation, strings	1400	x535
130A	Hexagonal numbers *special problem, implementation	900	x1648
129B	Students and Shoelaces brute force, dfs and similar, graphs, implementation	1200	x12438
129A	Cookies implementation	900	x22992
128E	Birthday geometry, math	2900	x99
128D	Numbers constructive algorithms, implementation	2000	x1152
128C	Games with Rectangle combinatorics, dp	2000	x2994
128B	String brute force, constructive algorithms, hashing, implementation, string suffix structures, strings	2100	x2613
128A	Statues dfs and similar	1500	x3225
127B	Canvas Frames implementation	1000	x8996
127A	Wasted Time geometry	900	x11349
126E	Pills brute force, flows	2900	x88
126D	Fibonacci Sums dp, math	2300	x842
126C	E-reader Display constructive algorithms, greedy	2000	x744
126B	Password binary search, dp, hashing, string suffix structures, strings	1700	x19938
126A	Hot Bath binary search, brute force, math	1900	x1437
125E	MST Company binary search, graphs	2400	x1101
125D	Two progressions constructive algorithms, greedy	2200	x417
125C	Hobbits' Party constructive algorithms, greedy	1600	x934
125B	Simple XML implementation	1000	x2990
125A	Measuring Lengths in Baden math	1400	x2755
124B	Permutations brute force, combinatorics, implementation	1400	x3986
124A	The number of positions math	1000	x39046
123E	Maze dfs and similar, dp, probabilities, trees	2500	x726
123D	String string suffix structures	2300	x1234
123C	Brackets combinatorics, dp, greedy	2300	x617
123B	Squares math	1800	x1137
123A	Prime Permutation implementation, number theory, strings	1300	x3652
122B	Lucky Substring brute force, implementation	1000	x12424
122A	Lucky Division brute force, number theory	1000	x126786
121E	Lucky Array data structures	2400	x1751
121D	Lucky Segments binary search, implementation, two pointers	2500	x278
121C	Lucky Permutation brute force, combinatorics, number theory	1900	x1289
121B	Lucky Transformation strings	1500	x2588
121A	Lucky Sum implementation	1100	x9324
120J	Minimum Sum divide and conquer, geometry, sortings	1900	x939
120I	Luck is in Numbers greedy	2200	x306
120H	Brevity is Soul of Wit graph matchings	1800	x1418
120G	Boom implementation	1800	x690
120F	Spiders dp, greedy, trees	1400	x3674
120E	Put Knight! games, math	1400	x2745