Problemset - Codeforces

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Problems

#	Name
280A	Rectangle Puzzle geometry	2000	x1443
1041F	Ray in the tube data structures, divide and conquer, dp, math	2500	x1442
1367F2	Flying Sort (Hard Version) binary search, data structures, dp, greedy, sortings, two pointers	2400	x1441
748E	Santa Claus and Tangerines binary search, data structures, greedy, two pointers	2100	x1441
723F	st-Spanning Tree dsu, graphs, greedy, implementation	2300	x1440
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1439
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2400	x1439
926G	Large Bouquets	1500	x1438
809B	Glad to see you! binary search, interactive	2200	x1437
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1436
1145B	Kanban Numbers brute force		x1436
1455E	Four Points brute force, constructive algorithms, flows, geometry, greedy, implementation, math, ternary search	2400	x1434
190E	Counter Attack data structures, dsu, graphs, hashing, sortings	2100	x1432
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1431
1210D	Konrad and Company Evaluation graphs	2400	x1428
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1427
717E	Paint it really, really dark gray dfs and similar	1900	x1427
182E	Wooden Fence dp	1800	x1425
1942E	Farm Game combinatorics, games	2300	x1424
1665E	MinimizOR bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers	2500	x1423
1216E2	Numerical Sequence (hard version) binary search, math	2200	x1422
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1421
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1421
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1420
713B	Searching Rectangles binary search, constructive algorithms, interactive	2200	x1419
802I	Fake News (hard) string suffix structures	2300	x1418
346C	Number Transformation II greedy, math	2200	x1418
313D	Ilya and Roads dp	2100	x1418
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1417
36B	Fractal implementation	1600	x1417
1333E	Road to 1600 brute force, constructive algorithms	2400	x1416
821E	Okabe and El Psy Kongroo dp, matrices	2100	x1411
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1410
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1410
1036E	Covered Points fft, geometry, number theory	2400	x1409
552E	Vanya and Brackets brute force, dp, expression parsing, greedy, implementation, strings	2100	x1409
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1408
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1405
739C	Alyona and towers data structures	2500	x1403
176A	Trading Business greedy, sortings	1200	x1403
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1402
126A	Hot Bath binary search, brute force, math	1900	x1402
171E	MYSTERIOUS LANGUAGE *special problem	2000	x1401
1606D	Red-Blue Matrix brute force, constructive algorithms, implementation, sortings	2400	x1399
203D	Hit Ball geometry, implementation, math	1700	x1399
1088E	Ehab and a component choosing problem dp, greedy, math, trees	2400	x1398
1132E	Knapsack dfs and similar, dp, greedy	2300	x1397
584E	Anton and Ira constructive algorithms, greedy, math	2300	x1396
452C	Magic Trick combinatorics, math, probabilities	2100	x1395
427E	Police Patrol greedy, implementation, math, ternary search	2000	x1395
1854C	Expected Destruction combinatorics, dp, math, probabilities	2500	x1393
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1393
178A3	Educational Game greedy	1100	x1393
524A	Возможно, вы знаете этих людей? implementation	1600	x1392
10C	Digital Root number theory	2000	x1391
1004D	Sonya and Matrix brute force, constructive algorithms, implementation	2300	x1390
500E	New Year Domino data structures, dp, dsu	2300	x1390
1381C	Mastermind constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers	2500	x1389
1155E	Guess the Root brute force, interactive, math	2200	x1389
1572C	Paint dp, greedy	2700	x1388
862E	Mahmoud and Ehab and the function binary search, data structures, sortings	2100	x1388
1707C	DFS Trees dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1387
853C	Boredom data structures	2100	x1387
425D	Sereja and Squares binary search, data structures, hashing	2300	x1387
416E	President's Path dp, graphs, shortest paths	2500	x1387
232B	Table bitmasks, combinatorics, dp, math	1900	x1387
95E	Lucky Country dp, dsu, graphs	2500	x1385
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1384
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1384
331A2	Oh Sweet Beaverette data structures, sortings	1500	x1384
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1383
883G	Orientation of Edges dfs and similar, graphs	1900	x1383
382B	Number Busters binary search, math	2000	x1383
1663D	Is it rated - 3 *special problem, combinatorics, dp, math		x1382
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1382
172D	Calendar Reform *special problem, number theory	1500	x1382
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1381
1601D	Difficult Mountain data structures, dp, greedy, sortings	2700	x1379
731E	Funny Game dp, games	2200	x1379
1773K	King's Puzzle constructive algorithms	1900	x1378
1650F	Vitaly and Advanced Useless Algorithms dp, greedy, implementation	2200	x1378
282D	Yet Another Number Game dp, games	2100	x1377
653E	Bear and Forgotten Tree 2 dfs and similar, dsu, graphs, trees	2400	x1376
587B	Duff in Beach dp	2100	x1376
550E	Brackets in Implications constructive algorithms, greedy, implementation, math	2200	x1376
1090B	LaTeX Expert	1900	x1373
901B	GCD of Polynomials constructive algorithms, math	2200	x1373
1096G	Lucky Tickets divide and conquer, dp, fft	2400	x1372
852B	Neural Network country dp, matrices	2000	x1372
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1371
1838E	Count Supersequences combinatorics, dp, math	2500	x1370
908F	New Year and Rainbow Roads graphs, greedy, implementation	2400	x1370
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1368
1170A	Three Integers Again *special problem, math		x1366
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1366
514E	Darth Vader and Tree dp, matrices	2200	x1366
452F	Permutation data structures, divide and conquer, hashing	2700	x1364
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1363
1244F	Chips constructive algorithms, implementation	2300	x1363
53B	Blog Photo binary search, implementation	1700	x1363