Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
421D	Bug in Code binary search, data structures, sortings	1900	x532
421A	Pasha and Hamsters constructive algorithms, implementation	800	x6050
420E	Playing the ball geometry	2600	x217
420D	Cup Trick data structures	2200	x835
420C	Bug in Code data structures, graphs, implementation, two pointers	1900	x1259
420B	Online Meeting implementation	1800	x1042
420A	Start Up implementation	1000	x6114
418E	Tricky Password data structures	3100	x313
418D	Big Problems for Organizers data structures, graphs, trees	2800	x480
417E	Square Table constructive algorithms, math, probabilities	2400	x824
417D	Cunning Gena bitmasks, dp, greedy, sortings	1900	x2476
417C	Football constructive algorithms, graphs, implementation	1400	x4664
417B	Crash implementation	1400	x1780
417A	Elimination dp, implementation, math	1500	x2987
416E	President's Path dp, graphs, shortest paths	2500	x1455
416D	Population Size greedy, implementation, math	2400	x950
416C	Booking System binary search, dp, greedy, implementation	1600	x7942
416B	Art Union brute force, dp, implementation	1300	x8715
416A	Guess a number! greedy, implementation, two pointers	1400	x8922
415B	Mashmokh and Tokens binary search, greedy, implementation, math	1500	x6277
415A	Mashmokh and Lights implementation	900	x8983
414E	Mashmokh's Designed Problem data structures	3200	x200
414D	Mashmokh and Water Tanks binary search, data structures, greedy, trees, two pointers	2300	x683
414C	Mashmokh and Reverse Operation combinatorics, divide and conquer	2100	x2217
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x22271
414A	Mashmokh and Numbers constructive algorithms, number theory	1500	x9798
413E	Maze 2D data structures, divide and conquer	2200	x720
413D	2048 bitmasks, dp	2000	x813
413C	Jeopardy! greedy, math	1400	x2380
413B	Spyke Chatting implementation	1300	x1704
413A	Data Recovery implementation	1200	x2629
412E	E-mail Addresses implementation	1900	x840
412D	Giving Awards dfs and similar	2000	x1883
412C	Pattern implementation, strings	1200	x3922
412B	Network Configuration greedy, sortings	900	x5406
412A	Poster greedy, implementation	900	x4449
411C	Kicker implementation	1700	x1227
411B	Multi-core Processor implementation	1600	x1277
411A	Password Check *special problem, implementation	800	x7238
409I	Feed the Golorp *special problem	2400	x126
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8901
409G	On a plane *special problem, geometry	2200	x520
409F	000001 *special problem	1900	x2091
409E	Dome *special problem	1800	x577
409D	Big Data *special problem	1700	x1713
409C	Magnum Opus *special problem	1700	x1978
409B	Mysterious Language *special problem	1700	x1357
409A	The Great Game *special problem	1700	x2467
408B	Garland implementation	1200	x9273
408A	Line to Cashier implementation	900	x11238
407E	k-d-sequence data structures	3100	x758
407D	Largest Submatrix 3 dp, hashing	2700	x648
407C	Curious Array brute force, combinatorics, implementation, math	2500	x990
407B	Long Path dp, implementation	1600	x6532
407A	Triangle brute force, geometry, implementation, math	1600	x4878
406E	Hamming Triples implementation, math, two pointers	2800	x237
406D	Hill Climbing dfs and similar, geometry, trees	2200	x1169
405E	Graph Cutting dfs and similar, graphs	2300	x1393
405D	Toy Sum greedy, implementation, math	1700	x3117
405C	Unusual Product implementation, math	1600	x4626
405B	Domino Effect	1100	x5771
405A	Gravity Flip greedy, implementation, sortings	900	x100902
404E	Maze 1D binary search, greedy, implementation	2200	x577
404D	Minesweeper 1D dp, implementation	1900	x2150
404C	Restore Graph dfs and similar, graphs, sortings	1800	x5207
404B	Marathon implementation, math	1500	x2925
404A	Valera and X implementation	1000	x23913
403E	Two Rooted Trees data structures, implementation, trees	2900	x212
403D	Beautiful Pairs of Numbers combinatorics, dp	2300	x1098
402E	Strictly Positive Matrix graphs, math	2200	x2184
402D	Upgrading Array dp, greedy, math, number theory	1800	x2610
402C	Searching for Graph brute force, constructive algorithms, graphs	1500	x5885
402B	Trees in a Row brute force, implementation	1400	x3806
402A	Nuts greedy, math	1100	x4603
401E	Olympic Games math	2500	x168
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x4163
401C	Team constructive algorithms, greedy, implementation	1400	x19965
401B	Sereja and Contests greedy, implementation, math	1200	x4434
401A	Vanya and Cards implementation, math	800	x16174
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x962
400D	Dima and Bacteria dsu, graphs, shortest paths	2000	x2900
400C	Inna and Huge Candy Matrix implementation, math	1500	x2890
400B	Inna and New Matrix of Candies brute force, implementation, schedules	1200	x7719
400A	Inna and Choose Options implementation	1000	x6468
389B	Fox and Cross greedy, implementation	1100	x6906
389A	Fox and Number Game greedy, math	1000	x14053
388E	Fox and Meteor Shower geometry	3100	x122
388D	Fox and Perfect Sets math	2700	x442
388C	Fox and Card Game games, greedy, sortings	2000	x3363
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x2473
388A	Fox and Box Accumulation greedy, sortings	1400	x11475
387E	George and Cards binary search, data structures	2200	x882
387D	George and Interesting Graph graph matchings	2200	x1006
387C	George and Number greedy, implementation	1700	x2185
387B	George and Round brute force, greedy, two pointers	1200	x12207
387A	George and Sleep implementation	900	x9678
386D	Game with Points dp, graphs, implementation, shortest paths	2100	x435
386C	Diverse Substrings dp, strings, two pointers	2000	x782
386B	Fly, freebies, fly! binary search, brute force, implementation	1400	x2164
386A	Second-Price Auction implementation	800	x6269