Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
15:51:53
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Before contest
Codeforces Round 941 (Div. 2)
15:51:53
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number theory

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Problems

#	Name
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x373
185D	Visit of the Great math, number theory	2600	x378
360D	Levko and Sets number theory	2600	x384
93E	Lostborn dp, math, number theory	2600	x433
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x462
542D	Superhero's Job dfs and similar, dp, hashing, math, number theory	2600	x495
963C	Cutting Rectangle brute force, math, number theory	2600	x558
1582G	Kuzya and Homework data structures, number theory	2600	x560
1257G	Divisor Set divide and conquer, fft, greedy, math, number theory	2600	x573
703E	Mishka and Divisors dp, number theory	2600	x585
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x595
982E	Billiard geometry, number theory	2600	x689
763C	Timofey and remoduling brute force, implementation, math, number theory	2600	x702
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x738
235E	Number Challenge combinatorics, dp, implementation, math, number theory	2600	x740
1398G	Running Competition bitmasks, fft, math, number theory	2600	x762
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x806
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x992
1699E	Three Days Grace data structures, dp, greedy, math, number theory, two pointers	2600	x1075
1554E	You dfs and similar, dp, math, number theory	2600	x1176
1406E	Deleting Numbers interactive, math, number theory	2600	x1541
1278F	Cards combinatorics, dp, math, number theory, probabilities	2600	x1710
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x1800
1488G	Painting Numbers *special problem, data structures, greedy, number theory	2500	x117
294D	Shaass and Painter Robot brute force, implementation, number theory	2500	x298
1725E	Electrical Efficiency combinatorics, data structures, dp, math, number theory, trees	2500	x432
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x467
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x658
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x756
645F	Cowslip Collections combinatorics, math, number theory	2500	x757
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x996
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1002
792E	Colored Balls greedy, math, number theory	2500	x1037
710D	Two Arithmetic Progressions math, number theory	2500	x1153
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1179
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1213
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1258
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1264
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1349
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1480
594D	REQ data structures, number theory	2500	x1504
1497E2	Square-free division (hard version) data structures, dp, greedy, math, number theory, two pointers	2500	x1559
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2171
449C	Jzzhu and Apples constructive algorithms, number theory	2500	x2193
1305F	Kuroni and the Punishment math, number theory, probabilities	2500	x2337
55D	Beautiful numbers dp, number theory	2500	x3589
73E	Morrowindows math, number theory	2400	x322
200E	Tractor College implementation, math, number theory, ternary search	2400	x332
1045B	Space Isaac hashing, number theory	2400	x488
283D	Cows and Cool Sequences dp, math, number theory	2400	x519
293C	Cube Problem brute force, math, number theory	2400	x551
665F	Four Divisors data structures, dp, math, number theory, sortings, two pointers	2400	x576
922F	Divisibility constructive algorithms, dp, greedy, number theory	2400	x616
758F	Geometrical Progression brute force, math, number theory	2400	x616
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x665
582C	Superior Periodic Subarrays number theory	2400	x725
83D	Numbers dp, math, number theory	2400	x817
226C	Anniversary data structures, implementation, math, matrices, number theory	2400	x842
303C	Minimum Modular brute force, graphs, math, number theory	2400	x852
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x921
1106F	Lunar New Year and a Recursive Sequence math, matrices, number theory	2400	x945
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x950
585C	Alice, Bob, Oranges and Apples number theory	2400	x961
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x965
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x995
17D	Notepad number theory	2400	x1029
498D	Traffic Jams in the Land data structures, dp, number theory	2400	x1061
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1234
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1297
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1300
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1346
1036F	Relatively Prime Powers combinatorics, math, number theory	2400	x1357
1732D2	Balance (Hard version) brute force, data structures, number theory	2400	x1360
1036E	Covered Points fft, geometry, number theory	2400	x1406
1137D	Cooperative Game constructive algorithms, interactive, number theory	2400	x1459
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2400	x1470
1630D	Flipping Range constructive algorithms, dp, greedy, number theory	2400	x1504
1718C	Tonya and Burenka-179 data structures, greedy, math, number theory	2400	x1511
1830C	Hyperregular Bracket Strings combinatorics, greedy, hashing, math, number theory, sortings	2400	x1512
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1649
990G	GCD Counting divide and conquer, dp, dsu, number theory, trees	2400	x1720
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1808
1491E	Fib-tree brute force, dfs and similar, divide and conquer, number theory, trees	2400	x2041
446C	DZY Loves Fibonacci Numbers data structures, math, number theory	2400	x3168
1346G	Two IP Cameras *special problem, math, number theory	2300	x130
774E	Big Number and Remainder *special problem, math, number theory	2300	x206
180B	Divisibility Rules math, number theory	2300	x325
364C	Beautiful Set brute force, number theory	2300	x580
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x859
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x909
659G	Fence Divercity combinatorics, dp, number theory	2300	x947
768F	Barrels and boxes brute force, combinatorics, math, number theory, probabilities	2300	x998
300E	Empire Strikes Back binary search, math, number theory	2300	x1024
915G	Coprime Arrays math, number theory	2300	x1125
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1179
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1181
772C	Vulnerable Kerbals constructive algorithms, dp, graphs, math, number theory	2300	x1182
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1239
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1368
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1426