Problemset - Codeforces

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Codeforces Round 952 (Div. 4)
32:40:26
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combinatorics

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Problems

#	Name
1433E	Two Round Dances combinatorics, math	1300	x18109
1426F	Number of Subsequences combinatorics, dp, strings	2000	x5150
1425D	Danger of Mad Snakes combinatorics, dp, math	2300	x810
1422C	Bargain combinatorics, dp, math	1700	x8114
1420D	Rescue Nibel! combinatorics, data structures, sortings	1800	x7392
1418E	Expected Damage binary search, combinatorics, probabilities	2400	x1732
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x934
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x44
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x200
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x909
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x9859
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x680
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14601
1383E	Strange Operation combinatorics, data structures, dp	2800	x756
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2306
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4968
1366E	Two Arrays binary search, brute force, combinatorics, constructive algorithms, dp, two pointers	2100	x3976
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x924
1359E	Modular Stability combinatorics, math, number theory	2000	x5771
1342E	Placing Rooks combinatorics, fft, math	2300	x2875
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x293
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x653
1334E	Divisor Paths combinatorics, graphs, greedy, math, number theory	2200	x2648
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3621
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6416
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x28281
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1612
1327E	Count The Blocks combinatorics, dp, math	1800	x8633
1326C	Permutation Partitions combinatorics, greedy, math	1300	x15332
1312D	Count the Arrays combinatorics, math	1700	x9000
1307E	Cow and Treats binary search, combinatorics, dp, greedy, implementation, math	2500	x1123
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x13803
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x9083
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x422
1295F	Good Contest combinatorics, dp, probabilities	2700	x1026
1293B	JOE is on TV! combinatorics, greedy, math	1000	x20959
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x309
1292C	Xenon's Attack on the Gangs combinatorics, dfs and similar, dp, greedy, trees	2300	x1907
1288C	Two Arrays combinatorics, dp	1600	x12468
1285F	Classical? binary search, combinatorics, number theory	2900	x1076
1284E	New Year and Castle Construction combinatorics, geometry, math, sortings	2500	x1251
1284C	New Year and Permutation combinatorics, math	1600	x7862
1284B	New Year and Ascent Sequence binary search, combinatorics, data structures, dp, implementation, sortings	1400	x10731
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x59
1279E	New Year Permutations combinatorics, dp	2700	x356
1279D	Santa's Bot combinatorics, math, probabilities	1700	x5957
1278F	Cards combinatorics, dp, math, number theory, probabilities	2600	x1768
1276C	Beautiful Rectangle brute force, combinatorics, constructive algorithms, data structures, greedy, math	2300	x1599
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x4816
1272C	Yet Another Broken Keyboard combinatorics, dp, implementation	1200	x25549
1271E	Common Number binary search, combinatorics, dp, math	2100	x3181
1267K	Key Storage combinatorics, math	2100	x1871
1264D2	Beautiful Bracket Sequence (hard version) combinatorics, probabilities	2900	x859
1264D1	Beautiful Bracket Sequence (easy version) combinatorics, dp, probabilities	2600	x1188
1254E	Send Tree to Charlie combinatorics, dfs and similar, dsu, trees	3300	x262
1251F	Red-White Fence combinatorics, fft	2500	x803
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1738
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x7227
1238D	AB-string binary search, combinatorics, dp, strings	1900	x5880
1237F	Balanced Domino Placements combinatorics, dp	2600	x835
1236B	Alice and the List of Presents combinatorics, math	1500	x10729
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2561
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x1471
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x522
1215B	The Number of Products combinatorics, dp, implementation	1400	x12347
1207D	Number Of Permutations combinatorics	1800	x5944
1205E	Expected Value Again combinatorics, strings	3100	x272
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1600
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x5035
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x1610
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4561
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7790
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x974
1188E	Problem from Red Panda combinatorics	3300	x227
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2600	x718
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2632
1181C	Flag brute force, combinatorics, dp, implementation	1900	x3012
1178F1	Short Colorful Strip combinatorics, dfs and similar, dp	2200	x2064
1178C	Tiles combinatorics, greedy, math	1300	x11485
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1357
1172B	Nauuo and Circle combinatorics, dfs and similar, dp, trees	1900	x3783
1167F	Scalar Queries combinatorics, data structures, math, sortings	2300	x1584
1167E	Range Deleting binary search, combinatorics, data structures, two pointers	2100	x2559
1166A	Silent Classroom combinatorics, greedy	900	x14021
1153F	Serval and Bonus Problem combinatorics, dp, math, probabilities	2600	x764
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1149
1151E	Number of Components combinatorics, data structures, dp, math	2100	x3105
1140E	Palindrome-less Arrays combinatorics, divide and conquer, dp	2200	x1897
1118F2	Tree Cutting (Hard Version) combinatorics, dfs and similar, dp, trees	2700	x518
1111D	Destroy the Colony combinatorics, dp, math	2600	x928
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2400	x1273
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10181
1102E	Monotonic Renumeration combinatorics, sortings	1700	x5716
1097G	Vladislav and a Great Legend combinatorics, dp, trees	3000	x688
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1217
1096E	The Top Scorer combinatorics, dp, math, probabilities	2500	x917
1096B	Substring Removal combinatorics, math, strings	1300	x10384
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x6625
1089I	Interval-Free Permutations combinatorics	2600	x369
1085G	Beautiful Matrix combinatorics, data structures, dp	2900	x508