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# Problem Tags Rating Solved
1699-E Three Days Grace
data structures dp greedy +3
2600
1699-D Almost Triple Deletions
data structures dp greedy
2300
1699-C The Third Problem
combinatorics constructive algorithms math
1700
1699-B Almost Ternary Matrix
bitmasks constructive algorithms matrices
900
1699-A The Third Three Number Problem
constructive algorithms math
800
1698-G Long Binary String
bitmasks math matrices +2
2900
1698-F Equal Reversal
constructive algorithms graphs implementation +1
2800
1698-E PermutationForces II
brute force combinatorics greedy +3
2300
1698-D Fixed Point Guessing
binary search constructive algorithms interactive
1600
1698-C 3SUM Closure
brute force data structures
1300
1698-B Rising Sand
constructive algorithms greedy implementation
800
1698-A XOR Mixup
bitmasks brute force
800
1697-F Too Many Constraints
2-sat constructive algorithms graphs +1
2800
1697-E Coloring
brute force combinatorics constructive algorithms +6
2400
1697-D Guess The String
binary search constructive algorithms interactive
1900
1697-C awoo's Favorite Problem
binary search constructive algorithms data structures +4
1400
1697-B Promo
greedy sortings
900
1697-A Parkway Walk
greedy implementation
800
1696-H Maximum Product?
brute force combinatorics dp +4
3500
1696-G Fishingprince Plays With Array Again
brute force data structures geometry +1
3300
1696-F Tree Recovery
brute force constructive algorithms dfs and similar +3
2600
1696-E Placing Jinas
combinatorics math
2000
1696-D Permutation Graph
binary search constructive algorithms data structures +3
1900
1696-C Fishingprince Plays With Array
constructive algorithms greedy implementation +1
1400
1696-B NIT Destroys the Universe
greedy
900
1696-A NIT orz!
bitmasks greedy
800
1695-E Ambiguous Dominoes
constructive algorithms dfs and similar graphs
2700
1695-D2 Tree Queries (Hard Version)
constructive algorithms dfs and similar dp +2
2300
1695-D1 Tree Queries (Easy Version)
brute force constructive algorithms dfs and similar +3
2200
1695-C Zero Path
brute force data structures dp +3
1700
1695-B Circle Game
games greedy
1000
1695-A Subrectangle Guess
games
800
1694-B Paranoid String
constructive algorithms greedy
1200
1694-A Creep
greedy implementation
800
1693-F I Might Be Wrong
binary search greedy two pointers
3400
1693-E Outermost Maximums
data structures greedy
3400
1693-D Decinc Dividing
brute force data structures divide and conquer +2
2800
1693-C Keshi in Search of AmShZ
graphs greedy shortest paths
2300
1693-B Fake Plastic Trees
dfs and similar dp greedy +1
1700
1693-A Directional Increase
greedy
1300
1692-H Gambling
data structures dp greedy +1
1700
1692-G 2^Sort
data structures dp sortings +1
1400
1692-F 3SUM
brute force math
1300
1692-E Binary Deque
binary search implementation two pointers
1200
1692-D The Clock
brute force implementation
1100
1692-C Where's the Bishop?
implementation
800
1692-B All Distinct
greedy sortings
800
1692-A Marathon
implementation
800
1691-F K-Set Tree
combinatorics dfs and similar dp +2
2500
1691-E Number of Groups
data structures dfs and similar dsu +3
2300