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162 problems · filtered by 2 tags
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Rating
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Solved
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1562B
Scenes From a Memory
brute force
constructive algorithms
implementation
math
number theory
+
1000
20.7k
1553G
Common Divisor Graph
brute force
constructive algorithms
dsu
graphs
hashing
math
number theory
+
2700
1.3k
1542B
Plus and Multiply
constructive algorithms
math
number theory
+
1500
26.9k
1538D
Another Problem About Dividing Numbers
constructive algorithms
math
number theory
+
1700
15.5k
1521A
Nastia and Nearly Good Numbers
constructive algorithms
math
number theory
+
1000
42.6k
1521B
Nastia and a Good Array
constructive algorithms
math
number theory
+
1300
23.1k
1513D
GCD and MST
constructive algorithms
dsu
graphs
greedy
number theory
sortings
+
2000
6.7k
1511B
GCD Length
constructive algorithms
math
number theory
+
1100
24.9k
1485D
Multiples and Power Differences
constructive algorithms
graphs
math
number theory
+
2200
5.7k
1477A
Nezzar and Board
constructive algorithms
math
number theory
+
1800
6.6k
1474B
Different Divisors
binary search
constructive algorithms
greedy
math
number theory
+
1000
42.4k
1469D
Ceil Divisions
brute force
constructive algorithms
math
number theory
+
1700
10.3k
1454D
Number into Sequence
constructive algorithms
math
number theory
+
1300
22.5k
1427E
Xum
bitmasks
constructive algorithms
math
matrices
number theory
+
2500
1.7k
1419E
Decryption
constructive algorithms
implementation
math
number theory
+
2100
3.5k
1404D
Game of Pairs
constructive algorithms
dfs and similar
interactive
math
number theory
+
2800
1.3k
1401C
Mere Array
constructive algorithms
math
number theory
sortings
+
1300
27.3k
1396A
Multiples of Length
constructive algorithms
greedy
number theory
+
1600
16.8k
1389A
LCM Problem
constructive algorithms
greedy
math
number theory
+
800
51.4k
1370B
GCD Compression
constructive algorithms
math
number theory
+
1100
25.3k
1366D
Two Divisors
constructive algorithms
math
number theory
+
2000
12.6k
1355F
Guess Divisors Count
constructive algorithms
interactive
number theory
+
2600
984
1332B
Composite Coloring
brute force
constructive algorithms
greedy
math
number theory
+
1400
19.3k
1326A
Bad Ugly Numbers
constructive algorithms
number theory
+
1000
33k
1325A
EhAb AnD gCd
constructive algorithms
greedy
number theory
+
800
47.1k
1325D
Ehab the Xorcist
bitmasks
constructive algorithms
greedy
number theory
+
1700
13.8k
1266C
Diverse Matrix
constructive algorithms
greedy
math
number theory
+
1400
10.1k
1264F
Beautiful Fibonacci Problem
constructive algorithms
number theory
+
3500
1.1k
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
greedy
math
number theory
ternary search
two pointers
+
1800
5.1k
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
greedy
math
number theory
ternary search
two pointers
+
2100
3.5k
1242A
Tile Painting
constructive algorithms
math
number theory
+
1500
13.3k
1225G
To Make 1
bitmasks
constructive algorithms
dp
greedy
number theory
+
3100
665
1178D
Prime Graph
constructive algorithms
greedy
math
number theory
+
1500
8k
1174C
Ehab and a Special Coloring Problem
constructive algorithms
number theory
+
1300
12.9k
1166B
All the Vowels Please
constructive algorithms
math
number theory
+
1100
12k
1166E
The LCMs Must be Large
bitmasks
brute force
constructive algorithms
math
number theory
+
2100
3k
1149A
Prefix Sum Primes
constructive algorithms
greedy
math
number theory
+
1200
18.2k
1148G
Gold Experience
constructive algorithms
graphs
math
number theory
probabilities
+
3300
615
1137D
Cooperative Game
constructive algorithms
interactive
number theory
+
2400
2.2k
1110C
Meaningless Operations
constructive algorithms
math
number theory
+
1500
10.1k
1081E
Missing Numbers
binary search
constructive algorithms
greedy
math
number theory
+
1900
2.8k
959D
Mahmoud and Ehab and another array construction task
constructive algorithms
greedy
math
number theory
+
1900
3.3k
922F
Divisibility
constructive algorithms
dp
greedy
number theory
+
2400
768
912B
New Year's Eve
bitmasks
constructive algorithms
number theory
+
1300
14.2k
894B
Ralph And His Magic Field
combinatorics
constructive algorithms
math
number theory
+
1800
4.7k
776B
Sherlock and his girlfriend
constructive algorithms
number theory
+
1200
26.6k
772C
Vulnerable Kerbals
constructive algorithms
dp
graphs
math
number theory
+
2300
1.5k
766B
Mahmoud and a Triangle
constructive algorithms
geometry
greedy
math
number theory
sortings
+
1000
38.9k
743C
Vladik and fractions
brute force
constructive algorithms
math
number theory
+
1500
13.6k
682A
Alyona and Numbers
constructive algorithms
math
number theory
+
1100
24.3k
665D
Simple Subset
constructive algorithms
greedy
number theory
+
1800
4.2k
633B
A Trivial Problem
brute force
constructive algorithms
math
number theory
+
1300
7.3k
582A
GCD Table
constructive algorithms
greedy
number theory
+
1700
8.4k
546D
Soldier and Number Game
constructive algorithms
dp
math
number theory
+
1700
14.1k
487C
Prefix Product Sequence
constructive algorithms
math
number theory
+
2300
3.2k
449C
Jzzhu and Apples
constructive algorithms
number theory
+
2500
2.6k
439C
Devu and Partitioning of the Array
brute force
constructive algorithms
implementation
number theory
+
1700
4.2k
414A
Mashmokh and Numbers
constructive algorithms
number theory
+
1500
10.6k
361B
Levko and Permutation
constructive algorithms
math
number theory
+
1200
8.8k
271E
Three Horses
constructive algorithms
math
number theory
+
2200
685
199A
Hexadecimal's theorem
brute force
constructive algorithms
implementation
number theory
+
900
30.8k
66D
Petya and His Friends
constructive algorithms
math
number theory
+
1700
3.8k
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