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two pointers
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
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number theory
probabilities
schedules
shortest paths
sortings
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strings
ternary search
trees
two pointers
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Problems
#
Name
749C
Voting
greedy
,
implementation
,
two pointers
1500
x5911
1923D
Slimes
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x5897
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5895
1342D
Multiple Testcases
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
1900
x5833
1041D
Glider
binary search
,
data structures
,
two pointers
1700
x5811
439D
Devu and his Brother
binary search
,
sortings
,
ternary search
,
two pointers
1700
x5797
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5764
1042D
Petya and Array
data structures
,
divide and conquer
,
two pointers
1800
x5724
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5723
237C
Primes on Interval
binary search
,
number theory
,
two pointers
1600
x5570
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5565
1413C
Perform Easily
binary search
,
brute force
,
dp
,
implementation
,
sortings
,
two pointers
1900
x5539
1630B
Range and Partition
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x5504
1547F
Array Stabilization (GCD version)
binary search
,
brute force
,
data structures
,
divide and conquer
,
number theory
,
two pointers
1900
x5503
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5484
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5484
1379C
Choosing flowers
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
two pointers
2000
x5419
1450D
Rating Compression
binary search
,
data structures
,
greedy
,
implementation
,
two pointers
1800
x5307
734C
Anton and Making Potions
binary search
,
dp
,
greedy
,
two pointers
1600
x5288
1494C
1D Sokoban
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1900
x5230
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5204
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5181
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x5179
875B
Sorting the Coins
dsu
,
implementation
,
sortings
,
two pointers
1500
x5148
924B
Three-level Laser
binary search
,
greedy
,
two pointers
1600
x5064
1537E2
Erase and Extend (Hard Version)
binary search
,
data structures
,
greedy
,
hashing
,
string suffix structures
,
strings
,
two pointers
2200
x4982
1290B
Irreducible Anagrams
binary search
,
constructive algorithms
,
data structures
,
strings
,
two pointers
1800
x4925
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4877
359D
Pair of Numbers
binary search
,
brute force
,
data structures
,
math
,
two pointers
2000
x4830
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x4813
1060C
Maximum Subrectangle
binary search
,
implementation
,
two pointers
1600
x4806
1601B
Frog Traveler
data structures
,
dfs and similar
,
dp
,
graphs
,
shortest paths
,
two pointers
1900
x4774
1493D
GCD of an Array
brute force
,
data structures
,
hashing
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2100
x4738
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4678
1423K
Lonely Numbers
binary search
,
math
,
number theory
,
two pointers
1600
x4662
1380D
Berserk And Fireball
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
2000
x4620
1558B
Up the Strip
brute force
,
dp
,
math
,
number theory
,
two pointers
1900
x4611
939C
Convenient For Everybody
binary search
,
two pointers
1600
x4564
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4550
833B
The Bakery
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2200
x4499
1632D
New Year Concert
binary search
,
data structures
,
greedy
,
math
,
number theory
,
two pointers
2000
x4461
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4413
280B
Maximum Xor Secondary
data structures
,
implementation
,
two pointers
1800
x4372
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4370
1487E
Cheap Dinner
brute force
,
data structures
,
graphs
,
greedy
,
implementation
,
sortings
,
two pointers
2000
x4368
14D
Two Paths
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
,
two pointers
1900
x4311
1188B
Count Pairs
math
,
matrices
,
number theory
,
two pointers
2300
x4293
1569D
Inconvenient Pairs
binary search
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x4286
1918D
Blocking Elements
binary search
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4256
1463D
Pairs
binary search
,
constructive algorithms
,
greedy
,
two pointers
1900
x4240
1408D
Searchlights
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
,
two pointers
2000
x4163
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4140
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4132
514D
R2D2 and Droid Army
binary search
,
data structures
,
two pointers
2000
x4121
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4100
1516D
Cut
binary search
,
data structures
,
dp
,
graphs
,
number theory
,
two pointers
2100
x4094
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4027
1333F
Kate and imperfection
greedy
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2200
x3975
1366E
Two Arrays
binary search
,
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
two pointers
2100
x3960
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3928
1765D
Watch the Videos
binary search
,
constructive algorithms
,
two pointers
1700
x3911
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x3887
1659D
Reverse Sort Sum
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
,
two pointers
1900
x3876
1622D
Shuffle
combinatorics
,
math
,
two pointers
2000
x3873
1555E
Boring Segments
data structures
,
sortings
,
trees
,
two pointers
2100
x3863
1454F
Array Partition
binary search
,
data structures
,
greedy
,
two pointers
2100
x3800
1788D
Moving Dots
binary search
,
brute force
,
combinatorics
,
math
,
two pointers
2000
x3729
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3665
430B
Balls Game
brute force
,
two pointers
1400
x3628
60A
Where Are My Flakes?
implementation
,
two pointers
1300
x3527
1905D
Cyclic MEX
data structures
,
implementation
,
math
,
two pointers
2000
x3498
384B
Multitasking
greedy
,
implementation
,
sortings
,
two pointers
1500
x3485
1168B
Good Triple
brute force
,
two pointers
1900
x3447
229A
Shifts
brute force
,
two pointers
1500
x3439
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3432
895B
XK Segments
binary search
,
math
,
sortings
,
two pointers
1700
x3422
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3409
487B
Strip
binary search
,
data structures
,
dp
,
two pointers
2000
x3352
650B
Image Preview
binary search
,
brute force
,
dp
,
two pointers
1900
x3309
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3298
985E
Pencils and Boxes
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2100
x3254
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3235
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3215
1503C
Travelling Salesman Problem
binary search
,
data structures
,
dp
,
greedy
,
shortest paths
,
sortings
,
two pointers
2200
x3200
645C
Enduring Exodus
binary search
,
two pointers
1600
x3154
652C
Foe Pairs
combinatorics
,
sortings
,
two pointers
1800
x3093
1684E
MEX vs DIFF
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2100
x3040
939E
Maximize!
binary search
,
greedy
,
ternary search
,
two pointers
1800
x3009
6E
Exposition
binary search
,
data structures
,
dsu
,
trees
,
two pointers
1900
x3000
1367F1
Flying Sort (Easy Version)
dp
,
greedy
,
two pointers
2100
x2984
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x2965
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
2100
x2934
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2929
281B
Nearest Fraction
brute force
,
implementation
,
two pointers
1700
x2926
1195E
OpenStreetMap
data structures
,
two pointers
2100
x2925
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x2911
343C
Read Time
binary search
,
greedy
,
two pointers
1900
x2904
1744F
MEX vs MED
math
,
two pointers
2000
x2894
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x2868
1044A
The Tower is Going Home
binary search
,
two pointers
1700
x2849
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