Codeforces problemset search & solutions
Exclude tags.

Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.

Get exact match for tags using this format, eg: [u'brute force', 'dp']

< 1 2 3 ... 35 36 37 38 39 ... 100 101 102 >

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
7712 Rectangles combinatorics math Statement B AIM Tech Round 4 (Div. 2) {844} PROGRAMMING AIM Tech Round 4 -- Editorial 1300
7849 Chess Tourney implementation sortings Statement A Educational Codeforces Round 27 {845} PROGRAMMING 53986 1100
9117 Two TVs data structures greedy sortings Statement C Educational Codeforces Round 27 {845} PROGRAMMING 53986 1500
5070 Luba And The Ticket brute force greedy implementation Statement B Educational Codeforces Round 27 {845} PROGRAMMING 53986 1600
2403 Driving Test data structures dp greedy Statement D Educational Codeforces Round 27 {845} PROGRAMMING 1800
1731 Shortest Path Problem? dfs and similar graphs math Statement G Educational Codeforces Round 27 {845} PROGRAMMING 53986 2400
613 Fire in the City binary search data structures Statement E Educational Codeforces Round 27 {845} PROGRAMMING 2500
468 Guards In The Storehouse bitmasks dp Statement F Educational Codeforces Round 27 {845} PROGRAMMING 2600
4312 Curriculum Vitae brute force implementation Statement A Educational Codeforces Round 28 {846} PROGRAMMING 54357 1500
2571 Math Show brute force greedy Statement B Educational Codeforces Round 28 {846} PROGRAMMING 54357 1800
2578 Monitor binary search data structures Statement D Educational Codeforces Round 28 {846} PROGRAMMING 54357 1900
2740 Four Segments brute force data structures dp Statement C Educational Codeforces Round 28 {846} PROGRAMMING 54357 1900
2349 Random Query data structures math probabilities two pointers Statement F Educational Codeforces Round 28 {846} PROGRAMMING 54357 2000
917 Chemistry in Berland dfs and similar greedy trees Statement E Educational Codeforces Round 28 {846} PROGRAMMING 2400
6335 Weather Tomorrow implementation Statement M 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 1000
6929 University Classes implementation Statement G 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 1000
3476 Union of Doubly Linked Lists implementation Statement A 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 1500
5148 Preparing for Merge Sort binary search data structures Statement B 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 1700
2468 Load Testing Statement H 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 1700
2414 Sum of Nestings constructive algorithms Statement C 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 1900
3162 Packmen binary search dp Statement E 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2000
1536 Noise Level dfs and similar Statement I 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2000
1716 Travel Cards sortings Statement K 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2100
871 Berland Elections greedy Statement F 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2200
1230 Dog Show data structures greedy Statement D 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2300
643 Students Initiation binary search flows Statement J 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2400
322 Berland SU Computer Network dfs and similar hashing trees Statement L 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) {847} PROGRAMMING 2500
5187 From Y to Y constructive algorithms Statement A Codeforces Round 431 (Div. 1) {848} PROGRAMMING Codeforces Round #431 Editorial 1600
1920 Rooter's Song constructive algorithms data structures geometry implementation sortings two pointers Statement B Codeforces Round 431 (Div. 1) {848} PROGRAMMING 2100
1415 Goodbye Souvenir data structures divide and conquer Statement C Codeforces Round 431 (Div. 1) {848} PROGRAMMING Codeforces Round #431 Editorial 2800
390 Shake It! combinatorics dp flows graphs Statement D Codeforces Round 431 (Div. 1) {848} PROGRAMMING Codeforces Round #431 Editorial 2900
219 Days of Floral Colours combinatorics divide and conquer dp fft math Statement E Codeforces Round 431 (Div. 1) {848} PROGRAMMING 3400
9203 Odds and Ends implementation Statement A Codeforces Round 431 (Div. 2) {849} PROGRAMMING Codeforces Round #431 Editorial 1100
3712 Tell Your World brute force geometry Statement B Codeforces Round 431 (Div. 2) {849} PROGRAMMING Codeforces Round #431 Editorial 1600
3218 Five Dimensional Points brute force geometry math Statement A Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 1700
2040 Arpa and a list of numbers implementation number theory Statement B Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 2000
1536 Arpa and a game with Mojtaba bitmasks dp games Statement C Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 2400
396 Tournament Construction constructive algorithms dp graphs greedy math Statement D Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 2700
409 Random Elections bitmasks brute force divide and conquer fft math Statement E Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING 2800
672 Rainbow Balls math Statement F Codeforces Round 432 (Div. 1, based on IndiaHacks Final Round 2017) {850} PROGRAMMING Codeforces Round #432 editorial 2800
5593 Arpa and an exam about geometry geometry math Statement B Codeforces Round 432 (Div. 2, based on IndiaHacks Final Round 2017) {851} PROGRAMMING Codeforces Round #432 editorial 1400
9845 Arpa and a research in Mexican wave implementation math Statement A Codeforces Round 432 (Div. 2, based on IndiaHacks Final Round 2017) {851} PROGRAMMING Codeforces Round #432 editorial 800
1298 Bathroom terminal implementation Statement G Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 1700
1497 Neural Network country dp matrices Statement B Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 2000
1070 Casinos and travel dp Statement E Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 2200
585 Product transformation combinatorics math number theory Statement F Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING Tutorial 2300
1063 Exploration plan binary search flows graph matchings shortest paths Statement D Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 2400
603 Property greedy sortings Statement C Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING Tutorial 2500
587 Dating brute force dfs and similar graphs trees Statement I Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 2500
394 Digits brute force implementation math Statement A Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 2700
152 Bob and stages dp geometry Statement H Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING 3100
5917 Planning greedy Statement A Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises) {853} PROGRAMMING 1500
2555 Jury Meeting greedy sortings two pointers Statement B Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises) {853} PROGRAMMING 1900
1521 Boredom data structures Statement C Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises) {853} PROGRAMMING 2200
681 Michael and Charging Stations binary search dp greedy Statement D Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises) {853} PROGRAMMING 2400
70 Lada Malina data structures geometry Statement E Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises) {853} PROGRAMMING 3400
8262 Maxim Buys an Apartment constructive algorithms math Statement B Codeforces Round 433 (Div. 2, based on Olympiad of Metropolises) {854} PROGRAMMING 1200
13758 Fraction brute force constructive algorithms math Statement A Codeforces Round 433 (Div. 2, based on Olympiad of Metropolises) {854} PROGRAMMING 900
8850 Marvolo Gaunt's Ring brute force data structures dp Statement B Manthan, Codefest 17 {855} PROGRAMMING 1500
2116 Helga Hufflepuff's Cup dp trees Statement C Manthan, Codefest 17 {855} PROGRAMMING 2000
1827 Salazar Slytherin's Locket bitmasks dp Statement E Manthan, Codefest 17 {855} PROGRAMMING 54750 2200
534 Rowena Ravenclaw's Diadem trees Statement D Manthan, Codefest 17 {855} PROGRAMMING 2400
464 Nagini binary search data structures Statement F Manthan, Codefest 17 {855} PROGRAMMING 3000
223 Harry Vs Voldemort dfs and similar dp graphs trees Statement G Manthan, Codefest 17 {855} PROGRAMMING 3000
22467 Tom Riddle's Diary brute force implementation strings Statement A Manthan, Codefest 17 {855} PROGRAMMING 54750 700
1468 Set Theory brute force constructive algorithms Statement A Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} PROGRAMMING Tutorial 1600
521 Similar Words dp strings Statement B Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} PROGRAMMING Tutorial 2300
636 Eleventh Birthday combinatorics dp math Statement C Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} PROGRAMMING 2400
416 Masha and Cactus Statement D Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} PROGRAMMING Tutorial 2500
105 To Play or not to Play greedy Statement F Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} PROGRAMMING 3100
72 Satellites Statement E Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] {856} PROGRAMMING 3100
8141 k-rounding brute force math number theory Statement A Технокубок 2018 - Отборочный Раунд 1 {858} PROGRAMMING Codeforces Round 434 Div.1+Div.2 (and Technocup 2018 — Elimination Round 1) Editorial 1200
3776 Which floor? brute force implementation Statement B Технокубок 2018 - Отборочный Раунд 1 {858} PROGRAMMING 1500
5653 Did you mean... dp greedy implementation Statement C Технокубок 2018 - Отборочный Раунд 1 {858} PROGRAMMING Codeforces Round 434 Div.1+Div.2 (and Technocup 2018 — Elimination Round 1) Editorial 1500
3923 Polycarp's phone book data structures implementation sortings Statement D Технокубок 2018 - Отборочный Раунд 1 {858} PROGRAMMING Codeforces Round 434 Div.1+Div.2 (and Technocup 2018 — Elimination Round 1) Editorial 1700
513 Tests Renumeration greedy implementation Statement E Технокубок 2018 - Отборочный Раунд 1 {858} PROGRAMMING 2300
1684 Wizard's Tour constructive algorithms dfs and similar graphs Statement F Технокубок 2018 - Отборочный Раунд 1 {858} PROGRAMMING 2400
7105 Lazy Security Guard brute force geometry math Statement B MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING Tutorial 1000
5494 Pie Rules dp games Statement C MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING Tutorial 1500
1055 Third Month Insanity dp probabilities trees Statement D MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING 2100
1888 Desk Disorder combinatorics dfs and similar ds graphs trees Statement E MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING Tutorial 2100
188 Ordering T-Shirts greedy Statement F MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING 2700
162 Circle of Numbers math Statement G MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING Tutorial 2900
7822 Declined Finalists greedy implementation Statement A MemSQL Start[c]UP 3.0 - Round 1 {859} PROGRAMMING Tutorial 800
448 Arkady and a Nobody-men data structures dfs and similar trees Statement E Codeforces Round 434 (Div. 1, based on Technocup 2018 Elimination Round 1) {860} PROGRAMMING 2600
9636 Mahmoud and Ehab and the MEX greedy implementation Statement A Codeforces Round 435 (Div. 2) {862} PROGRAMMING Codeforces round #435 editorial 1000
18912 Mahmoud and Ehab and the bipartiteness dfs and similar graphs trees Statement B Codeforces Round 435 (Div. 2) {862} PROGRAMMING Codeforces round #435 editorial 1400
4162 Mahmoud and Ehab and the xor constructive algorithms Statement C Codeforces Round 435 (Div. 2) {862} PROGRAMMING Codeforces round #435 editorial 1800
1907 Mahmoud and Ehab and the binary string binary search divide and conquer interactive Statement D Codeforces Round 435 (Div. 2) {862} PROGRAMMING 2000
1691 Mahmoud and Ehab and the function binary search data structures sortings Statement E Codeforces Round 435 (Div. 2) {862} PROGRAMMING 2200
214 Mahmoud and Ehab and the final stage data structures strings Statement F Codeforces Round 435 (Div. 2) {862} PROGRAMMING Codeforces round #435 editorial 2800
8748 Kayaking brute force greedy sortings Statement B Educational Codeforces Round 29 {863} PROGRAMMING Editorial 1500
3338 Yet Another Array Queries Problem data structures implementation Statement D Educational Codeforces Round 29 {863} PROGRAMMING Editorial 1800
2540 1-2-3 graphs implementation Statement C Educational Codeforces Round 29 {863} PROGRAMMING 1800
3244 Turn Off The TV data structures sortings Statement E Educational Codeforces Round 29 {863} PROGRAMMING Editorial 2000
1297 Almost Permutation flows Statement F Educational Codeforces Round 29 {863} PROGRAMMING Editorial 2300
57 Graphic Settings Statement G Educational Codeforces Round 29 {863} PROGRAMMING 3100
10336 Quasi-palindrome brute force implementation Statement A Educational Codeforces Round 29 {863} PROGRAMMING Editorial 900
11728 Fair Game implementation sortings Statement A Codeforces Round 436 (Div. 2) {864} PROGRAMMING 1000
9324 Polycarp and Letters brute force implementation strings Statement B Codeforces Round 436 (Div. 2) {864} PROGRAMMING Codeforces Round #436 (Div.2) Разбор 1100