Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
271E	Three Horses constructive algorithms, math, number theory	2200	x490
271D	Good Substrings data structures, strings	1800	x11234
271C	Secret constructive algorithms, implementation	1500	x2946
271B	Prime Matrix binary search, brute force, math, number theory	1300	x13014
271A	Beautiful Year brute force	800	x137011
270B	Multithreading data structures, greedy, implementation	1400	x4130
270A	Fancy Fence geometry, implementation, math	1100	x45264
269E	String Theory geometry, math, strings	3100	x108
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x449
269C	Flawed Flow constructive algorithms, flows, graphs, greedy	2100	x1678
269B	Greenhouse Effect dp	1700	x6287
269A	Magical Boxes greedy, math	1600	x3521
268E	Playlist math, probabilities, sortings	2100	x991
268D	Wall Bars dp	2300	x508
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x13632
268B	Buttons implementation, math	1000	x32267
268A	Games brute force	800	x85980
267C	Berland Traffic math, matrices	2700	x161
267B	Dominoes dfs and similar, graphs	2000	x636
267A	Subtractions math, number theory	900	x7461
266E	More Queries to Array... data structures, math	2500	x920
266D	BerDonalds graphs, math, shortest paths	2400	x893
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1351
266B	Queue at the School constructive algorithms, graph matchings, implementation, shortest paths	800	x134294
266A	Stones on the Table implementation	800	x189636
265B	Roadside Trees (Simplified Edition) greedy, implementation	1000	x17202
265A	Colorful Stones (Simplified Edition) implementation	800	x36597
264E	Roadside Trees data structures, dp	3000	x428
264D	Colorful Stones dp, two pointers	2500	x419
264C	Choosing Balls dp	2000	x2915
264B	Good Sequences dp, number theory	1500	x10148
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10755
263E	Rhombus brute force, data structures, dp	2500	x401
263D	Cycle in Graph dfs and similar, graphs	1800	x3599
263C	Circle of Numbers brute force, dfs and similar, implementation	2000	x1078
263B	Squares greedy, implementation, sortings	900	x8893
263A	Beautiful Matrix implementation	800	x242477
262B	Roma and Changing Signs greedy	1200	x11342
262A	Roma and Lucky Numbers implementation	800	x19864
261E	Maxim and Calculator brute force, dp, two pointers	2800	x413
261D	Maxim and Increasing Subsequence dp	2600	x561
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x774
261B	Maxim and Restaurant dp, math, probabilities	1900	x1409
261A	Maxim and Discounts greedy, sortings	1400	x5165
260E	Dividing Kingdom binary search, brute force, data structures	2500	x455
260D	Black and White Tree constructive algorithms, dsu, graphs, greedy, trees	2100	x1538
260C	Balls and Boxes constructive algorithms, greedy, implementation	1700	x2974
260B	Ancient Prophesy brute force, implementation, strings	1600	x3804
260A	Adding Digits implementation, math	1400	x14623
259B	Little Elephant and Magic Square brute force, implementation	1100	x13936
259A	Little Elephant and Chess brute force, strings	1000	x9122
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1093
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1253
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1788
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1446
258A	Little Elephant and Bits greedy, math	1100	x22880
257E	Greedy Elevator data structures, implementation	2200	x285
257D	Sum greedy, math	1900	x1594
257C	View Angle brute force, geometry, math	1800	x4298
257B	Playing Cubes games, greedy, implementation	1300	x7049
257A	Sockets greedy, implementation, sortings	1100	x6474
256E	Lucky Arrays data structures	2400	x666
256D	Liars and Serge dp	2700	x256
255E	Furlo and Rublo and Game games, implementation, math	2200	x854
255D	Mr. Bender and Square binary search, implementation, math	1800	x1976
255C	Almost Arithmetical Progression brute force, dp	1500	x4706
255B	Code Parsing implementation	1200	x4964
255A	Greg's Workout implementation	800	x28502
254E	Dormitory dp, implementation	2100	x671
254D	Rats brute force, dfs and similar, graphs, implementation, shortest paths	2300	x538
254C	Anagram greedy, strings	1800	x1496
254B	Jury Size brute force, implementation	1500	x2151
254A	Cards with Numbers constructive algorithms, sortings	1200	x7040
253E	Printer binary search, data structures, implementation, sortings	2200	x528
253D	Table with Letters - 2 brute force, two pointers	2000	x840
253C	Text Editor data structures, dfs and similar, graphs, greedy, shortest paths	1600	x2601
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10688
253A	Boys and Girls greedy	1100	x11234
252B	Unsorting Array brute force, sortings	1800	x1712
252A	Little Xor brute force, implementation	1100	x5278
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x171
251D	Two Sets bitmasks, math	2700	x475
251C	Number Transformation dp, greedy, number theory	2000	x1025
251B	Playing with Permutations implementation, math	1800	x1270
251A	Points on Line binary search, combinatorics, two pointers	1300	x17582
250E	Mad Joe brute force	2000	x465
250D	Building Bridge geometry, ternary search, two pointers	1900	x893
250C	Movie Critics greedy	1600	x1932
250B	Restoring IPv6 implementation, strings	1500	x1980
250A	Paper Work greedy	1000	x4088
249E	Endless Matrix math	2600	x311
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x456
248E	Piglet's Birthday dp, math, probabilities	2600	x579
248D	Sweets for Everyone! binary search, greedy, implementation	2300	x494
248C	Robo-Footballer binary search, geometry	2000	x847
248B	Chilly Willy math, number theory	1400	x5306
248A	Cupboards implementation	800	x22228
246E	Blood Cousins Return binary search, data structures, dfs and similar, dp, sortings	2400	x3204
246D	Colorful Graph brute force, dfs and similar, graphs	1600	x9421
246C	Beauty Pageant brute force, constructive algorithms, greedy	1600	x2629