Problemset - Codeforces

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Codeforces Round (Div. 2)
3 days
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Problems

#	Name
1310C	Au Pont Rouge binary search, dp, strings	2800	x522
1310B	Double Elimination dp, implementation	2500	x517
1310A	Recommendations data structures, greedy, sortings	1700	x5174
1307G	Cow and Exercise flows, graphs, shortest paths	3100	x502
1307F	Cow and Vacation dfs and similar, dsu, trees	3300	x590
1307E	Cow and Treats binary search, combinatorics, dp, greedy, implementation, math	2500	x1279
1307D	Cow and Fields binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings	1900	x6378
1307C	Cow and Message brute force, dp, math, strings	1500	x11820
1307B	Cow and Friend geometry, greedy, math	1300	x13253
1307A	Cow and Haybales greedy, implementation	800	x14957
1305H	Kuroni the Private Tutor binary search, greedy	3500	x120
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x986
1305F	Kuroni and the Punishment math, number theory, probabilities	2500	x2659
1305E	Kuroni and the Score Distribution constructive algorithms, greedy, implementation, math	2200	x3102
1305D	Kuroni and the Celebration constructive algorithms, dfs and similar, interactive, trees	1900	x5004
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x14623
1305B	Kuroni and Simple Strings constructive algorithms, greedy, strings, two pointers	1200	x11747
1305A	Kuroni and the Gifts brute force, constructive algorithms, greedy, sortings	800	x14051
1304F2	Animal Observation (hard version) data structures, dp, greedy	2400	x1527
1304F1	Animal Observation (easy version) data structures, dp	2300	x1764
1304E	1-Trees and Queries data structures, dfs and similar, shortest paths, trees	2000	x5239
1304D	Shortest and Longest LIS constructive algorithms, graphs, greedy, two pointers	1800	x6327
1304C	Air Conditioner dp, greedy, implementation, sortings, two pointers	1500	x16381
1304B	Longest Palindrome brute force, constructive algorithms, greedy, implementation, strings	1100	x17870
1304A	Two Rabbits math	800	x25435
1303G	Sum of Prefix Sums data structures, divide and conquer, geometry, trees	2700	x797
1303F	Number of Components dsu, implementation	2800	x533
1303E	Erase Subsequences dp, strings	2200	x2813
1303D	Fill The Bag bitmasks, greedy	1900	x7095
1303C	Perfect Keyboard dfs and similar, greedy, implementation	1600	x12162
1303B	National Project math	1400	x15773
1303A	Erasing Zeroes implementation, strings	800	x32188
1302J	Keep talking and nobody explodes -- hard		x10
1302I	Deja vu		x2
1302H	Who needs suffix structures?		x8
1302G	Keep talking and nobody explodes -- medium		x23
1302F	Keep talking and nobody explodes -- easy bitmasks, brute force, expression parsing		x74
1302E	Amazing bitset		x46
1302D	Dijkstra		x96
1302C	Segment tree or Fenwick? data structures		x382
1302B	DAG constructive algorithms		x145
1302A	Nash equilibrium		x297
1301F	Super Jaber dfs and similar, graphs, implementation, shortest paths	2600	x1279
1301E	Nanosoft binary search, data structures, dp, implementation	2500	x1525
1301D	Time to Run constructive algorithms, graphs, implementation	2000	x4008
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x9345
1301B	Motarack's Birthday binary search, greedy, ternary search	1500	x14227
1301A	Three Strings implementation, strings	800	x19374
1300B	Assigning to Classes greedy, implementation, sortings	1000	x23442
1300A	Non-zero implementation, math	800	x21007
1299E	So Mean interactive, math	3400	x164
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x440
1299C	Water Balance data structures, geometry, greedy	2100	x3941
1299B	Aerodynamic geometry	1800	x5247
1299A	Anu Has a Function brute force, greedy, math	1500	x12032
1297I	Falling Blocks *special problem, data structures		x31
1297H	Paint the String *special problem, dp, strings		x44
1297G	M-numbers *special problem, dp, math		x70
1297F	Movie Fan *special problem, data structures, greedy, implementation, sortings		x117
1297E	Modernization of Treeland *special problem, dfs and similar, trees		x205
1297D	Bonus Distribution *special problem, binary search, greedy, sortings		x262
1297C	Dream Team *special problem, greedy		x399
1297B	Cartoons *special problem, implementation, sortings		x413
1297A	Likes Display *special problem, implementation		x941
1296F	Berland Beauty constructive algorithms, dfs and similar, greedy, sortings, trees	2100	x2892
1296E2	String Coloring (hard version) data structures, dp	2000	x5039
1296E1	String Coloring (easy version) constructive algorithms, dp, graphs, greedy, sortings	1800	x7483
1296D	Fight with Monsters greedy, sortings	1500	x14260
1296C	Yet Another Walking Robot data structures, implementation	1500	x14822
1296B	Food Buying math	900	x30204
1296A	Array with Odd Sum math	800	x41700
1295F	Good Contest combinatorics, dp, probabilities	2700	x1240
1295E	Permutation Separation data structures, divide and conquer	2200	x2533
1295D	Same GCDs math, number theory	1800	x8896
1295C	Obtain The String dp, greedy, strings	1600	x12920
1295B	Infinite Prefixes math, strings	1700	x9308
1295A	Display The Number greedy	900	x22822
1294F	Three Paths on a Tree dfs and similar, dp, greedy, trees	2000	x5788
1294E	Obtain a Permutation greedy, implementation, math	1900	x4921
1294D	MEX maximizing data structures, greedy, implementation, math	1600	x11738
1294C	Product of Three Numbers greedy, math, number theory	1300	x34748
1294B	Collecting Packages implementation, sortings	1200	x21812
1294A	Collecting Coins math	800	x46790
1293B	JOE is on TV! combinatorics, greedy, math	1000	x21209
1293A	ConneR and the A.R.C. Markland-N binary search, brute force, implementation	1100	x15409
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x310
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x341
1292D	Chaotic V. dp, graphs, greedy, math, number theory, trees	2700	x811
1292C	Xenon's Attack on the Gangs combinatorics, dfs and similar, dp, greedy, trees	2300	x2064
1292B	Aroma's Search brute force, constructive algorithms, geometry, greedy, implementation	1700	x6354
1292A	NEKO's Maze Game data structures, dsu, implementation	1400	x13347
1291F	Coffee Varieties (easy version) graphs, interactive	2800	x661
1291B	Array Sharpening greedy, implementation	1300	x14170
1291A	Even But Not Even greedy, math, strings	900	x19560
1290F	Making Shapes dp	3500	x379
1290E	Cartesian Tree data structures	3300	x548
1290D	Coffee Varieties (hard version) constructive algorithms, graphs, interactive	3000	x827
1290C	Prefix Enlightenment dfs and similar, dsu, graphs	2400	x1733
1290B	Irreducible Anagrams binary search, constructive algorithms, data structures, strings, two pointers	1800	x5434
1290A	Mind Control brute force, data structures, implementation	1600	x8569