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# Problem Tags Rating Solved
1211-H Road Repair in Treeland
*special binary search dp +1
3100
1211-G King's Path
*special math trees
2500
1211-F kotlinkotlinkotlinkotlin...
*special graphs implementation +1
2300
1211-E Double Permutation Inc.
*special binary search greedy
2000
1211-D Teams
*special binary search greedy +1
2000
1211-C Ice Cream
*special greedy sortings
1700
1211-B Traveling Around the Golden Ring of Berland
*special implementation
1500
1211-A Three Problems
*special implementation
1000
1210-G Mateusz and Escape Room
dp
3500
1210-F2 Marek and Matching (hard version)
brute force probabilities
3200
1210-F1 Marek and Matching (easy version)
brute force probabilities
3100
1210-E Wojtek and Card Tricks
math
2700
1210-D Konrad and Company Evaluation
graphs
2400
1210-C Kamil and Making a Stream
math number theory trees
2000
1210-B Marcin and Training Camp
brute force greedy
1700
1210-A Anadi and Domino
brute force graphs
1700
1209-H Moving Walkways
data structures greedy math
3300
1209-G2 Into Blocks (hard version)
data structures
3200
1209-G1 Into Blocks (easy version)
data structures dsu greedy +2
2000
1209-F Koala and Notebook
data structures dfs and similar graphs +3
2600
1209-E2 Rotate Columns (hard version)
bitmasks dp greedy +1
2500
1209-E1 Rotate Columns (easy version)
bitmasks brute force dp +2
2000
1209-D Cow and Snacks
dfs and similar dsu graphs
1700
1209-C Paint the Digits
constructive algorithms greedy implementation
1500
1209-B Koala and Lights
implementation math number theory
1300
1209-A Paint the Numbers
greedy implementation math
800
1208-H Red Blue Tree
data structures implementation trees
3500
1208-G Polygons
greedy math number theory
2800
1208-F Bits And Pieces
bitmasks dfs and similar dp +1
2600
1208-E Let Them Slide
data structures implementation
2200
1208-D Restore Permutation
binary search data structures greedy +1
1900
1208-C Magic Grid
constructive algorithms
1800
1208-B Uniqueness
binary search brute force implementation +1
1500
1208-A XORinacci
math
900
1207-G Indie Album
data structures dfs and similar hashing +3
2700
1207-F Remainder Problem
brute force data structures implementation
2100
1207-E XOR Guessing
bitmasks interactive math
1900
1207-D Number Of Permutations
combinatorics
1800
1207-C Gas Pipeline
dp greedy
1500
1207-B Square Filling
constructive algorithms greedy implementation
1200
1207-A There Are Two Types Of Burgers
brute force greedy implementation +1
800
1206-B Make Product Equal One
dp implementation
900
1206-A Choose Two Numbers
math sortings
800
1205-F Beauty of a Permutation
constructive algorithms math
3400
1205-E Expected Value Again
combinatorics strings
3100
1205-D Almost All
constructive algorithms trees
2700
1205-C Palindromic Paths
implementation interactive
2400
1205-B Shortest Cycle
bitmasks brute force graphs +1
1900
1205-A Almost Equal
constructive algorithms greedy math
1200
1204-E Natasha, Sasha and the Prefix Sums
combinatorics dp math +1
2300