Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
271C	Secret constructive algorithms, implementation	1500	x2918
271B	Prime Matrix binary search, brute force, math, number theory	1300	x12619
271A	Beautiful Year brute force	800	x130764
270B	Multithreading data structures, greedy, implementation	1400	x4094
270A	Fancy Fence geometry, implementation, math	1100	x44108
269E	String Theory geometry, math, strings	3100	x108
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x433
269C	Flawed Flow constructive algorithms, flows, graphs, greedy	2100	x1626
269B	Greenhouse Effect dp	1700	x6192
269A	Magical Boxes greedy, math	1600	x3489
268E	Playlist math, probabilities, sortings	2100	x981
268D	Wall Bars dp	2300	x502
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x13416
268B	Buttons implementation, math	1000	x31424
268A	Games brute force	800	x82823
267C	Berland Traffic math, matrices	2700	x160
267B	Dominoes dfs and similar, graphs	2000	x617
267A	Subtractions math, number theory	900	x7268
266E	More Queries to Array... data structures, math	2500	x770
266D	BerDonalds graphs, math, shortest paths	2400	x758
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1338
266B	Queue at the School constructive algorithms, graph matchings, implementation, shortest paths	800	x129441
266A	Stones on the Table implementation	800	x181855
265B	Roadside Trees (Simplified Edition) greedy, implementation	1000	x17005
265A	Colorful Stones (Simplified Edition) implementation	800	x35113
264E	Roadside Trees data structures, dp	3000	x398
264D	Colorful Stones dp, two pointers	2500	x408
264C	Choosing Balls dp	2000	x2796
264B	Good Sequences dp, number theory	1500	x9828
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10661
263E	Rhombus brute force, data structures, dp	2500	x396
263D	Cycle in Graph dfs and similar, graphs	1800	x3340
263C	Circle of Numbers brute force, dfs and similar, implementation	2000	x1062
263B	Squares greedy, implementation, sortings	900	x8783
263A	Beautiful Matrix implementation	800	x231018
262B	Roma and Changing Signs greedy	1200	x11047
262A	Roma and Lucky Numbers implementation	800	x19390
261E	Maxim and Calculator brute force, dp, two pointers	2800	x406
261D	Maxim and Increasing Subsequence dp	2600	x554
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x765
261B	Maxim and Restaurant dp, math, probabilities	1900	x1374
261A	Maxim and Discounts greedy, sortings	1400	x5118
260E	Dividing Kingdom binary search, brute force, data structures	2500	x423
260D	Black and White Tree constructive algorithms, dsu, graphs, greedy, trees	2100	x1375
260C	Balls and Boxes constructive algorithms, greedy, implementation	1700	x2937
260B	Ancient Prophesy brute force, implementation, strings	1600	x3759
260A	Adding Digits implementation, math	1400	x14291
259B	Little Elephant and Magic Square brute force, implementation	1100	x13788
259A	Little Elephant and Chess brute force, strings	1000	x8982
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1043
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1222
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1766
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1427
258A	Little Elephant and Bits greedy, math	1100	x22337
257E	Greedy Elevator data structures, implementation	2200	x277
257D	Sum greedy, math	1900	x1559
257C	View Angle brute force, geometry, math	1800	x4230
257B	Playing Cubes games, greedy, implementation	1300	x6914
257A	Sockets greedy, implementation, sortings	1100	x6415
256E	Lucky Arrays data structures	2400	x656
256D	Liars and Serge dp	2700	x256
255E	Furlo and Rublo and Game games, implementation, math	2200	x836
255D	Mr. Bender and Square binary search, implementation, math	1800	x1935
255C	Almost Arithmetical Progression brute force, dp	1500	x4655
255B	Code Parsing implementation	1200	x4898
255A	Greg's Workout implementation	800	x27963
254E	Dormitory dp, implementation	2100	x541
254D	Rats brute force, dfs and similar, graphs, implementation, shortest paths	2300	x505
254C	Anagram greedy, strings	1800	x1476
254B	Jury Size brute force, implementation	1500	x2135
254A	Cards with Numbers constructive algorithms, sortings	1200	x6908
253E	Printer binary search, data structures, implementation, sortings	2200	x523
253D	Table with Letters - 2 brute force, two pointers	2000	x822
253C	Text Editor data structures, dfs and similar, graphs, greedy, shortest paths	1600	x2550
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10427
253A	Boys and Girls greedy	1100	x11032
252B	Unsorting Array brute force, sortings	1800	x1698
252A	Little Xor brute force, implementation	1100	x5200
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x169
251D	Two Sets bitmasks, math	2700	x444
251C	Number Transformation dp, greedy, number theory	2000	x1013
251B	Playing with Permutations implementation, math	1800	x1257
251A	Points on Line binary search, combinatorics, two pointers	1300	x16989
250E	Mad Joe brute force	2000	x441
250D	Building Bridge geometry, ternary search, two pointers	1900	x882
250C	Movie Critics greedy	1600	x1894
250B	Restoring IPv6 implementation, strings	1500	x1955
250A	Paper Work greedy	1000	x4020
249E	Endless Matrix math	2600	x290
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x399
248E	Piglet's Birthday dp, math, probabilities	2600	x570
248D	Sweets for Everyone! binary search, greedy, implementation	2300	x487
248C	Robo-Footballer binary search, geometry	2000	x802
248B	Chilly Willy math, number theory	1400	x5225
248A	Cupboards implementation	800	x21696
246E	Blood Cousins Return binary search, data structures, dfs and similar, dp, sortings	2400	x3034
246D	Colorful Graph brute force, dfs and similar, graphs	1600	x9273
246C	Beauty Pageant brute force, constructive algorithms, greedy	1600	x2612
246B	Increase and Decrease greedy, math	1300	x11069
246A	Buggy Sorting constructive algorithms, greedy, sortings	900	x9124