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# Problem Tags Rating Solved
977-D Divide by three, multiply by two
dfs and similar math sortings
1400
977-C Less or Equal
sortings
1200
977-B Two-gram
implementation strings
900
977-A Wrong Subtraction
implementation
800
976-F Minimal k-covering
flows graphs
2500
976-E Well played!
greedy sortings
2100
976-D Degree Set
constructive algorithms graphs implementation
2500
976-C Nested Segments
greedy implementation sortings
1500
976-B Lara Croft and the New Game
implementation math
1300
976-A Minimum Binary Number
implementation
800
975-E Hag's Khashba
geometry
2600
975-D Ghosts
geometry math
2000
975-C Valhalla Siege
binary search
1400
975-B Mancala
brute force implementation
1100
975-A Aramic script
implementation strings
900
967-B Watering System
math sortings
1000
967-A Mind the Gap
implementation
1100
965-E Short Code
data structures dp greedy +2
2200
965-D Single-use Stones
binary search flows greedy +1
1900
965-C Greedy Arkady
math
2000
965-B Battleship
implementation
1300
965-A Paper Airplanes
math
800
964-B Messages
math
1300
964-A Splits
math
800
963-E Circles of Waiting
math
3100
963-D Frequency of String
hashing string suffix structures strings
2500
963-C Cutting Rectangle
brute force math number theory
2600
963-B Destruction of a Tree
constructive algorithms dfs and similar dp +2
2000
963-A Alternating Sum
math number theory
1800
962-G Visible Black Areas
data structures dsu geometry +1
2800
962-F Simple Cycles Edges
dfs and similar graphs trees
2400
962-E Byteland, Berland and Disputed Cities
constructive algorithms greedy
2200
962-D Merge Equals
data structures implementation
1600
962-C Make a Square
brute force implementation math
1400
962-B Students in Railway Carriage
constructive algorithms greedy implementation
1300
962-A Equator
implementation
1300
961-G Partitions
combinatorics math number theory
2700
961-F k-substrings
binary search hashing string suffix structures
2700
961-E Tufurama
data structures
1900
961-D Pair Of Lines
geometry
2000
961-C Chessboard
bitmasks brute force implementation
1400
961-B Lecture Sleep
data structures dp implementation +1
1200
961-A Tetris
implementation
900
960-H Santa's Gift
data structures trees
3100
960-G Bandit Blues
combinatorics dp fft +1
2900
960-F Pathwalks
data structures dp graphs
2100
960-E Alternating Tree
combinatorics dfs and similar divide and conquer +3
2300
960-D Full Binary Tree Queries
brute force implementation trees
2100
960-C Subsequence Counting
bitmasks constructive algorithms greedy +1
1700
960-B Minimize the error
data structures greedy sortings
1500