Problemset - Codeforces

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Before contest
Codeforces Round #792 (Div. 1)
3 days

Before contest
Codeforces Round #792 (Div. 2)
3 days

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Problems

#	Name
158A	Next Round *special problem, implementation	800	x149627
770A	New Password *special problem, implementation	800	x13091
411A	Password Check *special problem, implementation	800	x5362
291A	Spyke Talks *special problem, implementation, sortings	800	x5337
172A	Phone Code *special problem, brute force, implementation	800	x4788
769A	Year of University Entrance *special problem, implementation, sortings	800	x4695
1431A	Selling Hamburgers *special problem	800	x1257
1571A	Sequence of Comparisons *special problem	800	x864
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x11382
1057A	Bmail Computer Network *special problem, dfs and similar, trees	900	x4380
130A	Hexagonal numbers *special problem, implementation	900	x1067
1488A	From Zero To Y *special problem, math	900	x1010
637A	Voting for Photos *special problem, constructive algorithms, implementation	1000	x4605
644A	Parliament of Berland *special problem, constructive algorithms	1000	x4015
1346A	Color Revolution *special problem, math	1000	x1638
72G	Fibonacci army *special problem, dp	1000	x1215
1211A	Three Problems *special problem, implementation	1000	x876
158B	Taxi *special problem, greedy, implementation	1100	x61034
522B	Photo to Remember *special problem, data structures, dp, implementation	1100	x7426
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3329
159B	Matchmaker *special problem, greedy, sortings	1100	x3257
1001A	Generate plus state or minus state *special problem	1100	x955
100A	Carpeting the Room *special problem, implementation	1100	x654
162A	Pentagonal numbers *special problem, implementation	1100	x625
188A	Hexagonal Numbers *special problem	1100	x515
188D	Asterisks *special problem, implementation	1100	x379
1115G1	AND oracle *special problem	1100	x362
522A	Reposts *special problem, dfs and similar, dp, graphs, trees	1200	x12453
637B	Chat Order *special problem, binary search, constructive algorithms, data structures, sortings	1200	x9444
171A	Mysterious numbers - 1 *special problem, constructive algorithms	1200	x3384
774C	Maximum Number *special problem, constructive algorithms, greedy, implementation	1200	x3055
928A	Login Verification *special problem, strings	1200	x3054
769B	News About Credit *special problem, greedy, two pointers	1200	x2993
523A	Rotate, Flip and Zoom *special problem, implementation	1200	x2410
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2305
683A	The Check of the Point *special problem, geometry	1200	x721
1001H	Oracle for f(x) = parity of the number of 1s in x *special problem	1200	x502
72C	Extraordinarily Nice Numbers *special problem, math	1200	x482
158D	Ice Sculptures *special problem, brute force, number theory	1300	x5883
171B	Star *special problem, combinatorics	1300	x3115
291B	Command Line Arguments *special problem, implementation, strings	1300	x2858
770B	Maximize Sum of Digits *special problem, implementation, math	1300	x2396
171D	Broken checker *special problem, brute force	1300	x2072
929B	Места в самолёте *special problem, implementation	1300	x2010
64A	Factorial *special problem, implementation	1300	x1046
661A	Lazy Caterer Sequence *special problem	1300	x558
1001F	Distinguish multi-qubit basis states *special problem	1300	x509
1571B	Epic Novel *special problem, math	1300	x489
188B	A + Reverse B *special problem, implementation	1300	x404
158C	Cd and pwd commands *special problem, data structures, implementation	1400	x7031
1505C	Fibonacci Words *special problem, implementation	1400	x5357
290A	Mysterious strings *special problem, implementation	1400	x2660
159C	String Manipulation 1.0 *special problem, binary search, brute force, data structures, strings	1400	x2584
929A	Прокат велосипедов *special problem, greedy, implementation	1400	x2436
523C	Name Quest *special problem, greedy	1400	x2328
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2326
928B	Chat *special problem, dp	1400	x2302
159A	Friends or Not *special problem, greedy, implementation	1400	x2241
290D	Orange *special problem, implementation	1400	x1629
1057B	DDoS *special problem, brute force	1400	x1586
770D	Draw Brackets! *special problem, implementation	1400	x1511
1346B	Boot Camp *special problem, greedy	1400	x959
1431B	Polycarp and the Language of Gods *special problem, implementation, two pointers	1400	x792
1001B	Generate Bell state *special problem	1400	x681
1001D	Distinguish plus state and minus state *special problem	1400	x655
1001C	Generate GHZ state *special problem	1400	x625
1001G	Oracle for f(x) = k-th element of x *special problem	1400	x511
470A	Crystal Ball Sequence *special problem, implementation	1400	x497
130B	Gnikool Ssalg *special problem, implementation, strings	1400	x436
100C	A+B *special problem, implementation	1400	x414
188C	LCM *special problem, implementation, math	1400	x344
683D	Chocolate Bar *special problem, math	1400	x284
188E	HQ9+ *special problem, implementation	1400	x273
188F	Binary Notation *special problem, implementation	1400	x244
409H	A + B Strikes Back *special problem, brute force, constructive algorithms, dsu, implementation	1500	x6539
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x3896
770C	Online Courses In BSU *special problem, dfs and similar, graphs, implementation	1500	x2221
290B	QR code *special problem, implementation	1500	x2130
774D	Lie or Truth *special problem, constructive algorithms, implementation, sortings	1500	x1736
638B	Making Genome in Berland *special problem, dfs and similar, strings	1500	x1681
172D	Calendar Reform *special problem, number theory	1500	x1237
172C	Bus *special problem, implementation, sortings	1500	x1048
523B	Mean Requests *special problem, implementation	1500	x911
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x656
530A	Quadratic equation *special problem	1500	x646
64B	Expression *special problem, expression parsing	1500	x576
530C	Diophantine equation *special problem	1500	x444
130C	Decimal sum *special problem	1500	x420
345A	Expecting Trouble *special problem, probabilities	1500	x418
1431D	Used Markers *special problem, greedy	1500	x386
130D	Exponentiation *special problem	1500	x327
72I	Goofy Numbers *special problem, implementation	1500	x299
100D	World of Mouth *special problem, strings	1500	x265
100B	Friendly Numbers *special problem, implementation	1500	x244
1115U1	Anti-diagonal unitary *special problem	1500	x240
100I	Rotation *special problem, geometry, math	1500	x215
1505B	DMCA *special problem, implementation, number theory	1600	x4991
523D	Statistics of Recompressing Videos *special problem, data structures, implementation	1600	x1874
637D	Running with Obstacles *special problem, data structures, dp, greedy	1600	x1770
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1613

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