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# Problem Tags Rating Solved
1419-D2 Sage's Birthday (hard version)
binary search brute force constructive algorithms +3
1500
1419-D1 Sage's Birthday (easy version)
binary search constructive algorithms greedy +1
1000
1419-C Killjoy
greedy implementation math
1500
1419-B Stairs
brute force constructive algorithms greedy +2
1200
1419-A Digit Game
games greedy implementation
900
1418-G Three Occurrences
data structures divide and conquer hashing +1
2500
1418-F Equal Product
data structures math number theory +1
3000
1418-E Expected Damage
binary search combinatorics probabilities
2400
1418-D Trash Problem
data structures implementation
2100
1418-C Mortal Kombat Tower
dp graphs greedy +1
1500
1418-B Negative Prefixes
greedy sortings
1300
1418-A Buying Torches
math
1000
1417-B Two Arrays
greedy math sortings
1100
1417-A Copy-paste
greedy math
800
1416-F Showing Off
flows graph matchings greedy +1
3300
1416-E Split
binary search data structures dp +1
3200
1416-D Graph and Queries
data structures dsu graphs +2
2600
1416-C XOR Inverse
bitmasks data structures divide and conquer +6
2000
1416-B Make Them Equal
constructive algorithms greedy math
2000
1416-A k-Amazing Numbers
binary search data structures implementation +1
1500
1415-F Cakes for Clones
dp
2900
1415-E New Game Plus!
constructive algorithms greedy math
2200
1415-D XOR-gun
bitmasks brute force constructive algorithms
2000
1415-C Bouncing Ball
brute force dp implementation
1400
1415-B Repainting Street
brute force greedy
1100
1415-A Prison Break
brute force math
800
1413-F Roads and Ramen
data structures trees
2800
1413-E Solo mid Oracle
greedy math ternary search
2100
1413-D Shurikens
data structures greedy implementation
1700
1413-C Perform Easily
binary search brute force dp +3
1900
1413-B A New Technique
implementation
1100
1413-A Finding Sasuke
constructive algorithms math
800
1411-G No Game No Life
bitmasks games math +1
2700
1411-F The Thorny Path
greedy math
3000
1411-E Poman Numbers
bitmasks greedy math +1
2300
1411-D Grime Zoo
brute force greedy implementation +1
2100
1411-C Peaceful Rooks
dfs and similar dsu graphs
1700
1411-B Fair Numbers
brute force number theory
1000
1411-A In-game Chat
implementation
800
1409-F Subsequences of Length Two
dp strings
2100
1409-E Two Platforms
binary search dp sortings +1
1800
1409-D Decrease the Sum of Digits
greedy math
1500
1409-C Yet Another Array Restoration
brute force math number theory
1200
1409-B Minimum Product
brute force greedy math
1100
1409-A Yet Another Two Integers Problem
greedy math
800
1408-I Bitwise Magic
dp math
3200
1408-H Rainbow Triples
binary search data structures flows +1
3300
1408-G Clusterization Counting
combinatorics dp dsu +3
2700
1408-F Two Different
constructive algorithms divide and conquer
2300
1408-E Avoid Rainbow Cycles
data structures dsu graphs +3
2400