Problemset - Codeforces

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Problems

#	Name
158A	Next Round *special problem, implementation	800	x233712
770A	New Password *special problem, implementation	800	x18834
411A	Password Check *special problem, implementation	800	x6999
291A	Spyke Talks *special problem, implementation, sortings	800	x5989
172A	Phone Code *special problem, brute force, implementation	800	x5906
769A	Year of University Entrance *special problem, implementation, sortings	800	x5574
1769A	Узкая дорога *special problem, math	800	x1905
1431A	Selling Hamburgers *special problem	800	x1792
1571A	Sequence of Comparisons *special problem	800	x1254
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x14031
1057A	Bmail Computer Network *special problem, dfs and similar, trees	900	x5777
130A	Hexagonal numbers *special problem, implementation	900	x1523
1488A	From Zero To Y *special problem, math	900	x1343
637A	Voting for Photos *special problem, constructive algorithms, implementation	1000	x5316
644A	Parliament of Berland *special problem, constructive algorithms	1000	x4400
72G	Fibonacci army *special problem, dp	1000	x2054
1346A	Color Revolution *special problem, math	1000	x1949
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1316
1211A	Three Problems *special problem, implementation	1000	x1279
158B	Taxi *special problem, greedy, implementation	1100	x82723
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x8695
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3760
159B	Matchmaker *special problem, greedy, sortings	1100	x3681
1910A	Username *special problem, implementation	1100	x1611
1958A	1-3-5 *special problem, dp	1100	x1003
1001A	Generate plus state or minus state *special problem	1100	x1003
100A	Carpeting the Room *special problem, implementation	1100	x892
162A	Pentagonal numbers *special problem, implementation	1100	x794
188A	Hexagonal Numbers *special problem	1100	x762
188D	Asterisks *special problem, implementation	1100	x657
1115G1	AND oracle *special problem	1100	x382
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x15740
637B	Chat Order *special problem, binary search, constructive algorithms, data structures, sortings	1200	x15089
171A	Mysterious numbers - 1 *special problem, constructive algorithms	1200	x4364
774C	Maximum Number *special problem, constructive algorithms, greedy, implementation	1200	x4030
928A	Login Verification *special problem, strings	1200	x3338
769B	News About Credit *special problem, greedy, two pointers	1200	x3238
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2691
523A	Rotate, Flip and Zoom *special problem, implementation	1200	x2582
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x932
72C	Extraordinarily Nice Numbers *special problem, math	1200	x902
683A	The Check of the Point *special problem, geometry	1200	x787
1001H	Oracle for f(x) = parity of the number of 1s in x *special problem	1200	x526
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6172
171B	Star *special problem, combinatorics	1300	x3949
291B	Command Line Arguments *special problem, implementation, strings	1300	x3012
770B	Maximize Sum of Digits *special problem, implementation, math	1300	x2734
64A	Factorial *special problem, implementation	1300	x2710
171D	Broken checker *special problem, brute force	1300	x2518
929B	Места в самолёте *special problem, implementation	1300	x2037
1769C2	Подкрутка II *special problem, dp	1300	x916
188B	A + Reverse B *special problem, implementation	1300	x703
1571B	Epic Novel *special problem, math	1300	x685
661A	Lazy Caterer Sequence *special problem	1300	x629
1001F	Distinguish multi-qubit basis states *special problem	1300	x532
158C	Cd and pwd commands *special problem, data structures, implementation	1400	x8902
1505C	Fibonacci Words *special problem, implementation	1400	x6305
290A	Mysterious strings *special problem, implementation	1400	x2949
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x2921
928B	Chat *special problem, dp	1400	x2507
929A	Прокат велосипедов *special problem, greedy, implementation	1400	x2491
523C	Name Quest *special problem, greedy	1400	x2466
159A	Friends or Not *special problem, greedy, implementation	1400	x2456
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2409
1057B	DDoS *special problem, brute force	1400	x1795
290D	Orange *special problem, implementation	1400	x1784
770D	Draw Brackets! *special problem, implementation	1400	x1568
1346B	Boot Camp *special problem, greedy	1400	x1183
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x1001
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x857
1001B	Generate Bell state *special problem	1400	x705
1001D	Distinguish plus state and minus state *special problem	1400	x676
470A	Crystal Ball Sequence *special problem, implementation	1400	x665
1001C	Generate GHZ state *special problem	1400	x647
1958B	Clock in the Pool *special problem, math	1400	x621
1001G	Oracle for f(x) = k-th element of x *special problem	1400	x532
130B	Gnikool Ssalg *special problem, implementation, strings	1400	x516
100C	A+B *special problem, implementation	1400	x515
188E	HQ9+ *special problem, implementation	1400	x490
188C	LCM *special problem, implementation, math	1400	x434
683D	Chocolate Bar *special problem, math	1400	x319
188F	Binary Notation *special problem, implementation	1400	x288
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x8692
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x4253
770C	Online Courses In BSU *special problem, dfs and similar, graphs, implementation	1500	x2537
290B	QR code *special problem, implementation	1500	x2404
638B	Making Genome in Berland *special problem, dfs and similar, strings	1500	x1932
774D	Lie or Truth *special problem, constructive algorithms, implementation, sortings	1500	x1906
172D	Calendar Reform *special problem, number theory	1500	x1382
172C	Bus *special problem, implementation, sortings	1500	x1129
64B	Expression *special problem, expression parsing	1500	x999
523B	Mean Requests *special problem, implementation	1500	x941
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x754
530A	Quadratic equation *special problem	1500	x668
530C	Diophantine equation *special problem	1500	x539
100B	Friendly Numbers *special problem, implementation	1500	x535
130C	Decimal sum *special problem	1500	x485
345A	Expecting Trouble *special problem, probabilities	1500	x477
72I	Goofy Numbers *special problem, implementation	1500	x456
1958C	Firewood *special problem	1500	x455

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