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# Problem Tags Rating Solved
1783-C Yet Another Tournament
binary search greedy sortings
1700
1783-B Matrix of Differences
constructive algorithms math
1100
1783-A Make it Beautiful
constructive algorithms math sortings
800
1781-H2 Window Signals (hard version)
3500
1781-H1 Window Signals (easy version)
3200
1781-G Diverse Coloring
constructive algorithms trees
3200
1781-F Bracket Insertion
combinatorics dp math +1
2700
1781-E Rectangle Shrinking
binary search brute force data structures +3
2300
1781-D Many Perfect Squares
brute force math number theory
1800
1781-C Equal Frequencies
brute force constructive algorithms greedy +3
1600
1781-B Going to the Cinema
brute force greedy sortings
1000
1781-A Parallel Projection
geometry math
800
1780-G Delicious Dessert
binary search dsu hashing +3
2400
1780-F Three Chairs
bitmasks brute force combinatorics +4
2300
1780-E Josuke and Complete Graph
binary search brute force data structures +2
2400
1780-D Bit Guessing Game
binary search bitmasks constructive algorithms +1
1800
1780-B GCD Partition
brute force greedy math +1
1100
1780-A Hayato and School
constructive algorithms greedy
800
1779-H Olympic Team Building
brute force meet-in-the-middle
3500
1779-G The Game of the Century
constructive algorithms graphs shortest paths
3000
1779-F Xorcerer's Stones
bitmasks constructive algorithms dp +1
2500
1779-E Anya's Simultaneous Exhibition
constructive algorithms graphs greedy +2
2400
1779-D Boris and His Amazing Haircut
constructive algorithms data structures dp +3
1700
1779-C Least Prefix Sum
data structures greedy
1600
1779-B MKnez's ConstructiveForces Task
constructive algorithms math
900
1779-A Hall of Fame
constructive algorithms greedy strings
800
1778-F Maximizing Root
dfs and similar dp graphs +3
2600
1778-E The Tree Has Fallen!
bitmasks dfs and similar math +1
2500
1778-D Flexible String Revisit
combinatorics dp math +1
2100
1778-C Flexible String
bitmasks brute force strings
1600
1778-B The Forbidden Permutation
greedy math
1300
1778-A Flip Flop Sum
greedy implementation
800
1777-F Comfortably Numb
bitmasks data structures divide and conquer +2
2400
1777-E Edge Reverse
binary search dfs and similar graphs +1
2200
1777-D Score of a Tree
bitmasks combinatorics dfs and similar +4
1900
1777-C Quiz Master
binary search math number theory +2
1700
1777-B Emordnilap
combinatorics greedy math
900
1777-A Everybody Likes Good Arrays!
greedy math
800
1776-N Count Permutations
math
3500
1776-M Parmigiana With Seafood
binary search dp greedy +1
3000
1776-L Controllers
binary search math
1500
1776-K Uniform Chemistry
dp math
3200
1776-J Italian Data Centers
graphs shortest paths
2500
1776-I Spinach Pizza
games geometry greedy +1
2500
1776-H Beppa and SwerChat
two pointers
1300
1776-G Another Wine Tasting Event
combinatorics constructive algorithms math +1
2100
1776-F Train Splitting
constructive algorithms graphs greedy
1700
1776-E Crossing the Railways
data structures dp
3500
1776-D Teamwork
constructive algorithms greedy math
2800
1776-C Library game
games greedy interactive +1
2500