Problemset - Codeforces

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Problems

#	Name
1910B	Security Guard *special problem, greedy	1600	x588
1431C	Black Friday *special problem, implementation	1600	x694
153A	A + B *special problem	1600	x759
171G	Mysterious numbers - 2 *special problem	1600	x890
171F	ucyhf *special problem, brute force, implementation, number theory	1600	x1245
774K	Stepan and Vowels *special problem, implementation, strings	1600	x1256
291D	Parallel Programming *special problem, greedy	1600	x1467
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1665
637D	Running with Obstacles *special problem, data structures, dp, greedy	1600	x1952
523D	Statistics of Recompressing Videos *special problem, data structures, implementation	1600	x2241
1505B	DMCA *special problem, implementation, number theory	1600	x6000
1115U1	Anti-diagonal unitary *special problem	1500	x250
100D	World of Mouth *special problem, strings	1500	x297
100I	Rotation *special problem, geometry, math	1500	x340
130D	Exponentiation *special problem	1500	x381
1431D	Used Markers *special problem, greedy	1500	x446
72I	Goofy Numbers *special problem, implementation	1500	x455
345A	Expecting Trouble *special problem, probabilities	1500	x476
130C	Decimal sum *special problem	1500	x485
100B	Friendly Numbers *special problem, implementation	1500	x534
530C	Diophantine equation *special problem	1500	x539
530A	Quadratic equation *special problem	1500	x668
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x754
523B	Mean Requests *special problem, implementation	1500	x941
64B	Expression *special problem, expression parsing	1500	x997
172C	Bus *special problem, implementation, sortings	1500	x1129
172D	Calendar Reform *special problem, number theory	1500	x1382
774D	Lie or Truth *special problem, constructive algorithms, implementation, sortings	1500	x1904
638B	Making Genome in Berland *special problem, dfs and similar, strings	1500	x1929
290B	QR code *special problem, implementation	1500	x2402
770C	Online Courses In BSU *special problem, dfs and similar, graphs, implementation	1500	x2528
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x4249
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8683
188F	Binary Notation *special problem, implementation	1400	x288
683D	Chocolate Bar *special problem, math	1400	x319
188C	LCM *special problem, implementation, math	1400	x434
188E	HQ9+ *special problem, implementation	1400	x490
100C	A+B *special problem, implementation	1400	x514
130B	Gnikool Ssalg *special problem, implementation, strings	1400	x516
1001G	Oracle for f(x) = k-th element of x *special problem	1400	x531
1001C	Generate GHZ state *special problem	1400	x646
470A	Crystal Ball Sequence *special problem, implementation	1400	x665
1001D	Distinguish plus state and minus state *special problem	1400	x675
1001B	Generate Bell state *special problem	1400	x704
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x855
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x999
1346B	Boot Camp *special problem, greedy	1400	x1179
770D	Draw Brackets! *special problem, implementation	1400	x1567
290D	Orange *special problem, implementation	1400	x1783
1057B	DDoS *special problem, brute force	1400	x1790
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2409
159A	Friends or Not *special problem, greedy, implementation	1400	x2454
523C	Name Quest *special problem, greedy	1400	x2466
929A	Прокат велосипедов *special problem, greedy, implementation	1400	x2491
928B	Chat *special problem, dp	1400	x2505
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x2919
290A	Mysterious strings *special problem, implementation	1400	x2945
1505C	Fibonacci Words *special problem, implementation	1400	x6300
158C	Cd and pwd commands *special problem, data structures, implementation	1400	x8876
1001F	Distinguish multi-qubit basis states *special problem	1300	x531
661A	Lazy Caterer Sequence *special problem	1300	x627
1571B	Epic Novel *special problem, math	1300	x676
188B	A + Reverse B *special problem, implementation	1300	x703
1769C2	Подкрутка II *special problem, dp	1300	x912
929B	Места в самолёте *special problem, implementation	1300	x2037
171D	Broken checker *special problem, brute force	1300	x2510
64A	Factorial *special problem, implementation	1300	x2697
770B	Maximize Sum of Digits *special problem, implementation, math	1300	x2724
291B	Command Line Arguments *special problem, implementation, strings	1300	x3012
171B	Star *special problem, combinatorics	1300	x3939
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6170
1001H	Oracle for f(x) = parity of the number of 1s in x *special problem	1200	x525
683A	The Check of the Point *special problem, geometry	1200	x785
72C	Extraordinarily Nice Numbers *special problem, math	1200	x901
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x928
523A	Rotate, Flip and Zoom *special problem, implementation	1200	x2570
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2687
769B	News About Credit *special problem, greedy, two pointers	1200	x3235
928A	Login Verification *special problem, strings	1200	x3335
774C	Maximum Number *special problem, constructive algorithms, greedy, implementation	1200	x4025
171A	Mysterious numbers - 1 *special problem, constructive algorithms	1200	x4350
637B	Chat Order *special problem, binary search, constructive algorithms, data structures, sortings	1200	x15043
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x15710
1115G1	AND oracle *special problem	1100	x381
188D	Asterisks *special problem, implementation	1100	x648
188A	Hexagonal Numbers *special problem	1100	x753
162A	Pentagonal numbers *special problem, implementation	1100	x789
100A	Carpeting the Room *special problem, implementation	1100	x884
1001A	Generate plus state or minus state *special problem	1100	x1002
1910A	Username *special problem, implementation	1100	x1574
159B	Matchmaker *special problem, greedy, sortings	1100	x3675
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3755
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x8685
158B	Taxi *special problem, greedy, implementation	1100	x82446
1211A	Three Problems *special problem, implementation	1000	x1272
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1311
1346A	Color Revolution *special problem, math	1000	x1941
72G	Fibonacci army *special problem, dp	1000	x2047
644A	Parliament of Berland *special problem, constructive algorithms	1000	x4378
637A	Voting for Photos *special problem, constructive algorithms, implementation	1000	x5310