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36 problems · filtered by 3 tags
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Name
✎
Rating
↕
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2129D
Permutation Blackhole
brute force
combinatorics
dp
implementation
math
+
2600
2.5k
2097B
Baggage Claim
combinatorics
dfs and similar
dp
dsu
graphs
implementation
math
trees
+
2300
2k
2084E
Blossom
binary search
combinatorics
dp
implementation
math
two pointers
+
2400
1.8k
2081E
Quantifier
combinatorics
dp
implementation
+
3300
89
2075E
XOR Matrix
bitmasks
combinatorics
dp
implementation
math
+
2500
1.2k
2063F1
Counting Is Not Fun (Easy Version)
combinatorics
data structures
dfs and similar
dp
dsu
graphs
hashing
implementation
math
trees
+
2400
1.6k
2043F
Nim
bitmasks
brute force
combinatorics
dp
games
greedy
implementation
shortest paths
+
2700
918
2039E
Shohag Loves Inversions
combinatorics
dp
implementation
math
+
2200
2.4k
2030E
MEXimize the Score
combinatorics
data structures
dp
greedy
implementation
math
+
2200
2k
1919E
Counting Prefixes
combinatorics
constructive algorithms
dp
implementation
math
+
2600
1.2k
1917D
Yet Another Inversions Problem
combinatorics
data structures
dp
implementation
math
number theory
+
2300
2.1k
1868C
Travel Plan
combinatorics
dp
implementation
math
trees
+
2400
1.4k
1861E
Non-Intersecting Subpermutations
combinatorics
dp
implementation
math
+
2300
2.1k
1789C
Serval and Toxel's Arrays
combinatorics
dp
implementation
math
+
1500
10.1k
1763D
Valid Bitonic Permutations
combinatorics
dp
implementation
math
number theory
+
2200
2.4k
1697E
Coloring
brute force
combinatorics
constructive algorithms
dp
geometry
graphs
greedy
implementation
math
+
2400
1.5k
1696H
Maximum Product?
brute force
combinatorics
dp
greedy
implementation
math
two pointers
+
3500
215
1666F
Fancy Stack
combinatorics
dp
implementation
+
2200
1.6k
1608F
MEX counting
combinatorics
dp
implementation
+
3200
913
1603F
October 18, 2017
combinatorics
dp
implementation
math
+
2700
402
1598E
Staircases
brute force
combinatorics
data structures
dfs and similar
dp
implementation
math
+
2100
2.5k
1542D
Priority Queue
combinatorics
dp
implementation
math
ternary search
+
2200
3k
1470E
Strange Permutation
binary search
combinatorics
data structures
dp
graphs
implementation
two pointers
+
3200
981
1403C
Chess Rush
*special
combinatorics
dp
implementation
math
+
3200
95
1307E
Cow and Treats
binary search
combinatorics
dp
greedy
implementation
math
+
2500
1.5k
1284B
New Year and Ascent Sequence
binary search
combinatorics
data structures
dp
implementation
sortings
+
1400
11.6k
1272C
Yet Another Broken Keyboard
combinatorics
dp
implementation
+
1200
31.3k
1215B
The Number of Products
combinatorics
dp
implementation
+
1400
19.4k
1181C
Flag
brute force
combinatorics
dp
implementation
+
1900
3.4k
1084C
The Fair Nut and String
combinatorics
dp
implementation
+
1500
12.4k
696C
PLEASE
combinatorics
dp
implementation
math
matrices
+
2000
2.3k
689E
Mike and Geometry Problem
combinatorics
data structures
dp
geometry
implementation
+
2000
2.3k
518F
Pasha and Pipe
binary search
brute force
combinatorics
dp
implementation
+
2300
442
336E
Vasily the Bear and Painting Square
bitmasks
combinatorics
dp
implementation
+
2700
158
285D
Permutation Sum
bitmasks
combinatorics
dp
implementation
meet-in-the-middle
+
1900
1.7k
235E
Number Challenge
combinatorics
dp
implementation
math
number theory
+
2600
963
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