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# Problem Tags Rating Solved
1998-A Find K Distinct Points with Fixed Center
constructive algorithms implementation math
800
1997-F Chips on a Line
brute force combinatorics dp +2
2700
1997-E Level Up
binary search brute force data structures +2
2200
1997-D Maximize the Root
binary search dfs and similar dp +2
1500
1997-C Even Positions
constructive algorithms data structures greedy
1100
1997-B Make Three Regions
constructive algorithms two pointers
1100
1997-A Strong Password
brute force implementation strings
800
1996-G Penacony
brute force data structures graphs +2
2200
1996-F Bomb
binary search greedy math
1900
1996-E Decode
combinatorics data structures implementation +1
1600
1996-D Fun
binary search brute force combinatorics +2
1500
1996-C Sort
dp greedy sortings +1
1200
1996-B Scale
greedy implementation
800
1996-A Legs
binary search math ternary search
800
1995-E2 Let Me Teach You a Lesson (Hard Version)
data structures dp matrices +1
2900
1995-E1 Let Me Teach You a Lesson (Easy Version)
2-sat data structures dp +2
2700
1995-D Cases
bitmasks brute force dp +1
2300
1995-C Squaring
brute force constructive algorithms greedy +3
1800
1995-B2 Bouquet (Hard Version)
binary search data structures greedy +3
1700
1995-B1 Bouquet (Easy Version)
binary search brute force greedy +2
1100
1995-A Diagonals
brute force greedy implementation +1
800
1994-H Fortnite
combinatorics constructive algorithms games +6
3500
1994-G Minecraft
bitmasks brute force dp +2
2600
1994-F Stardew Valley
constructive algorithms dfs and similar graphs +1
2500
1994-E Wooden Game
bitmasks greedy math +1
2000
1994-D Funny Game
constructive algorithms dsu graphs +4
1900
1994-C Hungry Games
binary search dp two pointers
1600
1994-B Fun Game
bitmasks constructive algorithms greedy +1
1100
1994-A Diverse Game
constructive algorithms greedy implementation
800
1993-F2 Dyn-scripted Robot (Hard Version)
chinese remainder theorem math number theory
2800
1993-F1 Dyn-scripted Robot (Easy Version)
brute force chinese remainder theorem constructive algorithms +2
2400
1993-E Xor-Grid Problem
bitmasks constructive algorithms dp +1
2700
1993-D Med-imize
binary search dp greedy
2200
1993-C Light Switches
implementation math
1400
1993-B Parity and Sum
constructive algorithms greedy
1100
1993-A Question Marks
greedy implementation
800
1992-G Ultra-Meow
combinatorics dp math
2000
1992-F Valuable Cards
brute force dp greedy +2
1900
1992-E Novice's Mistake
brute force constructive algorithms implementation +2
1700
1992-D Test of Love
dp greedy implementation
1200
1992-C Gorilla and Permutation
constructive algorithms math
900
1992-B Angry Monk
greedy math sortings
800
1992-A Only Pluses
brute force constructive algorithms greedy +2
800
1991-I Grid Game
constructive algorithms games graph matchings +2
3500
1991-H Prime Split Game
bitmasks dp fft +3
3300
1991-G Grid Reset
constructive algorithms greedy implementation
2700
1991-F Triangle Formation
brute force greedy implementation +2
2200
1991-E Coloring Game
constructive algorithms dfs and similar games +3
1900
1991-D Prime XOR Coloring
bitmasks constructive algorithms graphs +3
1900
1991-C Absolute Zero
constructive algorithms greedy math
1300