Problemset - Codeforces

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Problems

#	Name
158A	Next Round *special problem, implementation	800	x104104
770A	New Password *special problem, implementation	800	x9664
291A	Spyke Talks *special problem, implementation, sortings	800	x4784
411A	Password Check *special problem, implementation	800	x4496
769A	Year of University Entrance *special problem, implementation, sortings	800	x4151
172A	Phone Code *special problem, brute force, implementation	800	x4068
1431A	Selling Hamburgers *special problem	800	x946
1057A	Bmail Computer Network *special problem, dfs and similar, trees	900	x3294
130A	Hexagonal numbers *special problem, implementation	900	x767
637A	Voting for Photos *special problem, constructive algorithms, implementation	1000	x4187
644A	Parliament of Berland *special problem, constructive algorithms	1000	x3786
1346A	Color Revolution *special problem, math	1000	x1460
72G	Fibonacci army *special problem, dp	1000	x902
1211A	Three Problems *special problem, implementation	1000	x793
158B	Taxi *special problem, greedy, implementation	1100	x49214
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x6419
159B	Matchmaker *special problem, greedy, sortings	1100	x3048
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3042
1001A	Generate plus state or minus state *special problem	1100	x922
162A	Pentagonal numbers *special problem, implementation	1100	x575
100A	Carpeting the Room *special problem, implementation	1100	x555
188A	Hexagonal Numbers *special problem	1100	x473
1115G1	AND oracle *special problem	1100	x349
188D	Asterisks *special problem, implementation	1100	x322
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x10209
637B	Chat Order *special problem, binary search, constructive algorithms, data structures, sortings	1200	x7179
171A	Mysterious numbers - 1 *special problem, constructive algorithms	1200	x2880
769B	News About Credit *special problem, greedy, two pointers	1200	x2854
928A	Login Verification *special problem, strings	1200	x2820
774C	Maximum Number *special problem, constructive algorithms, greedy, implementation	1200	x2643
523A	Rotate, Flip and Zoom *special problem, implementation	1200	x2276
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2112
683A	The Check of the Point *special problem, geometry	1200	x627
1001H	Oracle for f(x) = parity of the number of 1s in x *special problem	1200	x489
72C	Extraordinarily Nice Numbers *special problem, math	1200	x435
158D	Ice Sculptures *special problem, brute force, number theory	1300	x5612
291B	Command Line Arguments *special problem, implementation, strings	1300	x2737
171B	Star *special problem, combinatorics	1300	x2654
770B	Maximize Sum of Digits *special problem, implementation, math	1300	x2181
929B	Места в самолёте *special problem, implementation	1300	x1990
171D	Broken checker *special problem, brute force	1300	x1831
64A	Factorial *special problem, implementation	1300	x630
1001F	Distinguish multi-qubit basis states *special problem	1300	x501
661A	Lazy Caterer Sequence *special problem	1300	x500
188B	A + Reverse B *special problem, implementation	1300	x365
158C	Cd and pwd commands *special problem, data structures, implementation	1400	x6382
290A	Mysterious strings *special problem, implementation	1400	x2467
929A	Прокат велосипедов *special problem, greedy, implementation	1400	x2396
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x2342
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2254
523C	Name Quest *special problem, greedy	1400	x2161
159A	Friends or Not *special problem, greedy, implementation	1400	x2156
928B	Chat *special problem, dp	1400	x2046
290D	Orange *special problem, implementation	1400	x1534
770D	Draw Brackets! *special problem, implementation	1400	x1476
1057B	DDoS *special problem, brute force	1400	x1336
1346B	Boot Camp *special problem, greedy	1400	x858
1001B	Generate Bell state *special problem	1400	x669
1001D	Distinguish plus state and minus state *special problem	1400	x645
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x615
1001C	Generate GHZ state *special problem	1400	x613
1001G	Oracle for f(x) = k-th element of x *special problem	1400	x502
470A	Crystal Ball Sequence *special problem, implementation	1400	x480
130B	Gnikool Ssalg *special problem, implementation, strings	1400	x396
100C	A+B *special problem, implementation	1400	x359
188C	LCM *special problem, implementation, math	1400	x318
683D	Chocolate Bar *special problem, math	1400	x269
188E	HQ9+ *special problem, implementation	1400	x257
188F	Binary Notation *special problem, implementation	1400	x229
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x5595
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x3577
290B	QR code *special problem, implementation	1500	x1999
770C	Online Courses In BSU *special problem, dfs and similar, graphs, implementation	1500	x1965
774D	Lie or Truth *special problem, constructive algorithms, sortings	1500	x1613
638B	Making Genome in Berland *special problem, dfs and similar, strings	1500	x1519
172D	Calendar Reform *special problem, number theory	1500	x1150
172C	Bus *special problem, implementation, sortings	1500	x1010
523B	Mean Requests *special problem, implementation	1500	x900
530A	Quadratic equation *special problem	1500	x639
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x611
530C	Diophantine equation *special problem	1500	x423
64B	Expression *special problem, expression parsing	1500	x404
130C	Decimal sum *special problem	1500	x386
345A	Expecting Trouble *special problem, probabilities	1500	x378
1431D	Used Markers *special problem, greedy	1500	x315
130D	Exponentiation *special problem	1500	x291
72I	Goofy Numbers *special problem, implementation	1500	x261
100D	World of Mouth *special problem, strings	1500	x250
1115U1	Anti-diagonal unitary *special problem	1500	x234
100B	Friendly Numbers *special problem, implementation	1500	x220
100I	Rotation *special problem, geometry, math	1500	x189
637D	Running with Obstacles *special problem, data structures, dp, greedy	1600	x1690
523D	Statistics of Recompressing Videos *special problem, data structures, implementation	1600	x1633
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1590
291D	Parallel Programming *special problem, greedy	1600	x1394
774K	Stepan and Vowels *special problem, implementation, strings	1600	x1065
171F	ucyhf *special problem, brute force, implementation, number theory	1600	x922
171G	Mysterious numbers - 2 *special problem	1600	x546
1001E	Distinguish Bell states *special problem	1600	x525
530B	String inside out *special problem	1600	x510

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