Problemset - Codeforces

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Codeforces Round #632 (Div. 2)
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combinatorics

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Problems

#	Name
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, dp, math	1900	x3196
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x2000
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x13566
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x578
1327E	Count The Blocks combinatorics, dp, math	1800	x4781
1326C	Permutation Partitions combinatorics, greedy, math	1300	x9489
1312D	Count the Arrays combinatorics, math	1700	x4637
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x6448
1307E	Cow and Treats binary search, combinatorics, dp, greedy, implementation, math	2400	x678
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x5150
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, math, trees	2900	x172
1295F	Good Contest combinatorics, dp, probabilities	2600	x381
1293B	JOE is on TV! combinatorics, greedy, math	1000	x11524
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3400	x46
1292C	Xenon's Attack on the Gangs combinatorics, dfs and similar, dp, greedy, trees	2300	x1104
1288C	Two Arrays combinatorics, dp	1600	x5532
1285F	Classical? binary search, combinatorics, number theory	2800	x361
1284E	New Year and Castle Construction combinatorics, geometry, math, sortings	2500	x667
1284C	New Year and Permutation combinatorics, math	1700	x4888
1284B	New Year and Ascent Sequence binary search, combinatorics, data structures, dp, implementation, sortings	1500	x6777
1279E	New Year Permutations combinatorics, dp	2700	x185
1279D	Santa's Bot combinatorics, math, probabilities	1700	x3060
1278F	Cards combinatorics, dp, math, number theory, probabilities	2600	x472
1271E	Common Number binary search, combinatorics, dp, math	2100	x1676
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x29
1276C	Beautiful Rectangle brute force, combinatorics, constructive algorithms, data structures, greedy, math	2300	x860
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x2552
1272C	Yet Another Broken Keyboard combinatorics, dp, implementation	1100	x9179
1264D2	Beautiful Bracket Sequence (hard version) combinatorics, probabilities	3000	x191
1264D1	Beautiful Bracket Sequence (easy version) combinatorics, dp, probabilities	2600	x495
1267K	Key Storage combinatorics, math	2200	x927
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x742
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3200	x93
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1001
1251F	Red-White Fence combinatorics, fft	2600	x288
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x4427
1236B	Alice and the List of Presents combinatorics, math	1400	x6439
1237F	Balanced Domino Placements combinatorics, dp	2600	x385
1238D	AB-string binary search, combinatorics, dp, strings	1800	x3398
1228E	Another Filling the Grid combinatorics, dp, math	2300	x1310
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x207
1215B	The Number of Products combinatorics, dp, implementation	1500	x6360
1207D	Number Of Permutations combinatorics	1800	x3598
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2400	x841
1205E	Expected Value Again combinatorics, strings	3100	x94
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x2890
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x889
1178F1	Short Colorful Strip combinatorics, dfs and similar, dp	2200	x1084
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1700	x3137
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x5475
1178C	Tiles combinatorics, greedy, math	1300	x6492
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2500	x463
1188E	Problem from Red Panda combinatorics	3200	x79
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2800	x358
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x1470
1181C	Flag brute force, combinatorics, dp, implementation	1900	x2138
1172B	Nauuo and Circle combinatorics, dfs and similar, dp, trees	2000	x2363
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x680
1166A	Silent Classroom combinatorics, greedy	900	x9589
1167F	Scalar Queries combinatorics, data structures, math, sortings	2300	x802
1167E	Range Deleting binary search, combinatorics, data structures, two pointers	2100	x1382
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2500	x550
1151E	Number of Components combinatorics, data structures, dp, math	2100	x1658
1153F	Serval and Bonus Problem combinatorics, dp, math, probabilities	2800	x366
1140E	Palindrome-less Arrays combinatorics, divide and conquer, dp	2200	x1227
1118F2	Tree Cutting (Hard Version) combinatorics, dfs and similar, dp, trees	2700	x220
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2600	x726
1111D	Destroy the Colony combinatorics, dp, math	2500	x551
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x5886
1102E	Monotonic Renumeration combinatorics, sortings	1800	x3025
1097G	Vladislav and a Great Legend combinatorics, dp, trees	2900	x232
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2400	x701
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x4475
1096E	The Top Scorer combinatorics, dp, math, probabilities	2600	x344
1096B	Substring Removal combinatorics, math, strings	1400	x6578
1085G	Beautiful Matrix combinatorics, data structures, dp	2600	x215
1081C	Colorful Bricks combinatorics, dp, math	1600	x3927
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x4547
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x952
1043D	Mysterious Crime brute force, combinatorics, math, meet-in-the-middle, two pointers	1700	x3095
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x1132
1065E	Side Transmutations combinatorics, strings	2200	x612
1060F	Shrinking Tree combinatorics, dp	2800	x204
1034C	Region Separation combinatorics, dp, number theory, trees	2900	x357
1036F	Relatively Prime Powers combinatorics, math, number theory	2400	x771
1036C	Classy Numbers combinatorics, dp	1800	x3542
1037F	Maximum Reduction combinatorics, data structures, math	2400	x647
1028D	Order book combinatorics, data structures, greedy	2100	x1312
1027E	Inverse Coloring combinatorics, dp, math	2100	x1083
1009E	Intercity Travelling combinatorics, math, probabilities	1900	x1855
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x673
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x7557
997D	Cycles in product combinatorics, divide and conquer, trees	2800	x220
997C	Sky Full of Stars combinatorics, math	2600	x711
997B	Roman Digits brute force, combinatorics, dp, greedy, math	2000	x2178
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x2159
995F	Cowmpany Cowmpensation combinatorics, dp, math, trees	2700	x384
991E	Bus Number brute force, combinatorics, math	1800	x2158
986B	Petr and Permutations combinatorics, math	1800	x3143
981H	K Paths combinatorics, data structures, dp, fft, math	2900	x142

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