Problemset - Codeforces

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Codeforces Round 979 (Div. 2)
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Before contest
Codeforces Round 980 (Div. 2)
17:54:53
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Problems

#	Name
34D	Road Map dfs and similar, graphs	1600	x5177
34C	Page Numbers expression parsing, implementation, sortings, strings	1300	x4230
34B	Sale greedy, sortings	900	x52486
34A	Reconnaissance 2 implementation	800	x29920
33E	Helper	2600	x130
33D	Knights geometry, graphs, shortest paths, sortings	2000	x1214
33C	Wonderful Randomized Sum greedy	1800	x3007
33B	String Problem shortest paths	1800	x4561
33A	What is for dinner? greedy, implementation	1200	x4066
32E	Hide-and-Seek geometry, implementation	2400	x336
32D	Constellation implementation	1600	x1283
32C	Flea math	1700	x2148
32B	Borze expression parsing, implementation	800	x63890
32A	Reconnaissance brute force	800	x12549
31E	TV Game dp	2400	x1082
31D	Chocolate dfs and similar, implementation	2000	x1044
31C	Schedule implementation	1700	x1814
31B	Sysadmin Bob greedy, implementation, strings	1500	x4333
31A	Worms Evolution implementation	1200	x10316
30E	Tricky and Clever Password binary search, constructive algorithms, data structures, greedy, hashing, strings	2800	x743
30D	King's Problem? geometry, greedy	2600	x437
30C	Shooting Gallery dp, probabilities	1800	x1961
30B	Codeforces World Finals implementation	1700	x1199
30A	Accounting brute force, math	1400	x3464
29E	Quarrel graphs, shortest paths	2400	x912
29D	Ant on the Tree constructive algorithms, dfs and similar, trees	2000	x2458
29C	Mail Stamps data structures, dfs and similar, graphs, implementation	1700	x4949
29B	Traffic Lights implementation	1500	x2960
29A	Spit Problem brute force	1000	x7074
28E	DravDe saves the world geometry, math	2800	x91
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x613
28C	Bath Queue combinatorics, dp, probabilities	2200	x1043
28B	pSort dfs and similar, dsu, graphs	1600	x4664
28A	Bender Problem implementation	1600	x800
27E	Number With The Given Amount Of Divisors brute force, dp, number theory	2000	x4219
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x2525
27C	Unordered Subsequence constructive algorithms, greedy	1900	x2803
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5370
27A	Next Test implementation, sortings	1200	x20351
26E	Multithreading constructive algorithms	2400	x376
26D	Tickets combinatorics, math, probabilities	2400	x794
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x858
26B	Regular Bracket Sequence greedy	1400	x19390
26A	Almost Prime number theory	900	x31366
25E	Test hashing, strings	2200	x2475
25D	Roads not only in Berland dsu, graphs, trees	1900	x11406
25C	Roads in Berland graphs, shortest paths	1900	x6315
25B	Phone numbers implementation	1100	x9690
25A	IQ test brute force	1300	x86419
24E	Berland collider binary search	2300	x899
24D	Broken robot dp, math, probabilities	2400	x1966
24C	Sequence of points geometry, implementation, math	1800	x1258
24B	F1 Champions implementation	1500	x1781
24A	Ring road graphs	1400	x5142
23E	Tree dp	2500	x616
23D	Tetragon geometry, math	2600	x337
23C	Oranges and Apples constructive algorithms, sortings	2500	x1422
23B	Party constructive algorithms, graphs, math	1600	x3367
23A	You're Given a String... brute force, greedy	1200	x5340
22E	Scheme dfs and similar, graphs, trees	2300	x1641
22D	Segments greedy, sortings	1900	x2739
22C	System Administrator graphs	1700	x3114
22B	Bargaining Table brute force, dp	1500	x4224
22A	Second Order Statistics brute force	800	x22307
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x884
21C	Stripe 2 binary search, dp, sortings	2000	x2123
21B	Intersection implementation, math	2000	x1350
21A	Jabber ID implementation, strings	1900	x1878
20C	Dijkstra? graphs, shortest paths	1900	x32951
20B	Equation math	2000	x3885
20A	BerOS file system implementation	1700	x6209
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x1868
19D	Points data structures	2800	x2419
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1098
19B	Checkout Assistant dp	1900	x4782
19A	World Football Cup implementation	1400	x2751
18E	Flag 2 dp	2000	x1084
18D	Seller Bob brute force, dp, greedy	2000	x1072
18C	Stripe data structures, implementation	1200	x13176
18B	Platforms brute force, math	1700	x2140
18A	Triangle brute force, geometry	1500	x6044
17E	Palisection strings	2900	x1587
17D	Notepad number theory	2400	x1089
17C	Balance dp	2500	x928
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x4824
17A	Noldbach problem brute force, math, number theory	1000	x16542
16E	Fish bitmasks, dp, probabilities	1900	x5109
16D	Logging implementation, strings	1900	x1595
16C	Monitor binary search, number theory	1800	x4767
16B	Burglar and Matches greedy, implementation, sortings	900	x18023
16A	Flag implementation	800	x14334
15E	Triangles combinatorics, dp	2600	x583
15D	Map data structures, implementation, sortings	2500	x763
15C	Industrial Nim games	2000	x2309
15B	Laser math	1800	x1465
15A	Cottage Village implementation, sortings	1200	x3920
14E	Camels dp	1900	x1706
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x4551
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3380
14B	Young Photographer implementation	1000	x7081