Problemset - Codeforces

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Codeforces Round 948 (Div. 2)
08:06:09
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number theory

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Problems

#	Name
1389E	Calendar Ambiguity math, number theory	2200	x3118
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38637
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24571
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12488
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x76
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x26296
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2300
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4961
1370C	Number Game games, math, number theory	1400	x23632
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23130
1370A	Maximum GCD greedy, implementation, math, number theory	800	x49176
1367E	Necklace Assembly brute force, dfs and similar, dp, graphs, greedy, number theory	1900	x5139
1366D	Two Divisors constructive algorithms, math, number theory	2000	x9983
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x26881
1360D	Buying Shovels math, number theory	1300	x31004
1359E	Modular Stability combinatorics, math, number theory	2000	x5749
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x816
1350B	Orac and Models dp, math, number theory	1400	x20723
1349A	Orac and LCM data structures, math, number theory	1600	x16028
1346G	Two IP Cameras *special problem, math, number theory	2300	x131
1344A	Hilbert's Hotel math, number theory, sortings	1600	x15246
1342C	Yet Another Counting Problem math, number theory	1600	x13642
1334E	Divisor Paths combinatorics, graphs, greedy, math, number theory	2200	x2644
1333F	Kate and imperfection greedy, implementation, math, number theory, sortings, two pointers	2200	x3982
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x17158
1331B	Limericks *special problem, math, number theory		x6979
1327D	Infinite Path brute force, dfs and similar, graphs, math, number theory	2200	x3076
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x29520
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x1855
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11617
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x38361
1324A	Yet Another Tetris Problem implementation, number theory	900	x25349
1322C	Instant Noodles graphs, hashing, math, number theory	2300	x2148
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15924
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x25365
1310F	Bad Cryptography math, number theory	3400	x67
1305F	Kuroni and the Punishment math, number theory, probabilities	2500	x2364
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x13704
1295D	Same GCDs math, number theory	1800	x8447
1294C	Product of Three Numbers greedy, math, number theory	1300	x32533
1292D	Chaotic V. dp, graphs, greedy, math, number theory, trees	2700	x778
1285F	Classical? binary search, combinatorics, number theory	2900	x1068
1285C	Fadi and LCM brute force, math, number theory	1400	x22181
1278F	Cards combinatorics, dp, math, number theory, probabilities	2600	x1760
1277B	Make Them Odd greedy, number theory	1200	x14671
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x9370
1264F	Beautiful Fibonacci Problem constructive algorithms, number theory	3500	x862
1263C	Everyone is a Winner! binary search, math, meet-in-the-middle, number theory	1400	x13365
1260C	Infinite Fence greedy, math, number theory	1700	x7882
1257G	Divisor Set divide and conquer, fft, greedy, math, number theory	2600	x581
1254B2	Send Boxes to Alice (Hard Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	2100	x2940
1254B1	Send Boxes to Alice (Easy Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	1800	x4423
1245A	Good ol' Numbers Coloring math, number theory	1000	x13907
1244C	The Football Season brute force, math, number theory	2000	x7434
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12291
1238A	Prime Subtraction math, number theory	900	x23367
1228C	Primes and Multiplication math, number theory	1700	x8733
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x525
1225D	Power Products hashing, math, number theory	1800	x7433
1223G	Wooden Raft binary search, math, number theory	3200	x226
1220D	Alex and Julian bitmasks, math, number theory	1900	x3723
1220B	Multiplication Table math, number theory	1300	x11383
1210C	Kamil and Making a Stream math, number theory, trees	2000	x3209
1209B	Koala and Lights implementation, math, number theory	1300	x8011
1208G	Polygons greedy, math, number theory	2800	x730
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1597
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x1047
1200C	Round Corridor math, number theory	1400	x9738
1198F	GCD Groups 2 greedy, number theory, probabilities	2900	x820
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4557
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7782
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x971
1190F	Tokitsukaze and Powers number theory, probabilities	3400	x90
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4364
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x137
1184A2	Heidi Learns Hashing (Medium) brute force, number theory	2100	x938
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5867
1182F	Maximum Sine binary search, data structures, number theory	2700	x330
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2532
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7224
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5145
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1353
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x11818
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2791
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x11281
1165D	Almost All Divisors math, number theory	1600	x15273
1155C	Alarm Clocks Everywhere math, number theory	1300	x9076
1154G	Minimum Possible LCM brute force, greedy, math, number theory	2200	x2631
1152C	Neko does Maths brute force, math, number theory	1800	x6535
1149A	Prefix Sum Primes constructive algorithms, greedy, math, number theory	1200	x14788
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3300	x315
1146D	Frog Jumping dfs and similar, math, number theory	2100	x1082
1144E	Median String bitmasks, math, number theory, strings	1900	x4067
1143B	Nirvana brute force, math, number theory	1200	x10096
1139D	Steps to One dp, math, number theory, probabilities	2300	x1994
1137D	Cooperative Game constructive algorithms, interactive, number theory	2400	x1478
1133D	Zero Quantity Maximization hashing, math, number theory	1500	x11002
1133B	Preparation for International Women's Day math, number theory	1200	x12396
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1817
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2200	x2777