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# Problem Tags Rating Solved
2160-B Distinct Elements
greedy math
1100
2160-A MEX Partition
math
800
2159-F Grand Finale: Snakes
binary search interactive ternary search
3500
2159-E Super-Short-Polynomial-San
math meet-in-the-middle
3500
2159-D2 Inverse Minimum Partition (Hard Version)
dp greedy math
3200
2159-D1 Inverse Minimum Partition (Easy Version)
binary search brute force dp +4
2500
2159-C Twin Polynomials
combinatorics graph matchings math
2300
2159-B Rectangles
brute force data structures dp +4
2100
2159-A MAD Interactive Problem
constructive algorithms implementation interactive
1700
2158-F2 Distinct GCDs (Hard Version)
combinatorics constructive algorithms graphs +2
3000
2158-F1 Distinct GCDs (Easy Version)
constructive algorithms graphs math +1
2600
2158-E Sink
data structures divide and conquer dsu +2
2600
2158-D Palindrome Flipping
brute force constructive algorithms graphs +3
2000
2158-C Annoying Game
dp games greedy
1400
2158-B Split
constructive algorithms greedy math
1200
2158-A Suspension
constructive algorithms greedy math
800
2157-I Hyper Smawk Bros
dp games
3500
2157-H Keygen 3
brute force combinatorics constructive algorithms +2
3200
2157-G Isaac's Queries
bitmasks brute force constructive algorithms +7
2800
2157-F Git Gud
brute force constructive algorithms divide and conquer +2
2400
2157-E Adjusting Drones
binary search brute force data structures +5
1900
2157-D Billion Players Game
binary search greedy math +3
1600
2157-C Meximum Array 2
constructive algorithms greedy implementation +1
1400
2157-B Expansion Plan 2
implementation math
900
2157-A Dungeon Equilibrium
greedy implementation sortings
800
2156-F2 Strange Operation (Hard Version)
data structures greedy trees
3000
2156-F1 Strange Operation (Easy Version)
brute force data structures greedy +2
2200
2156-E Best Time to Buy and Sell Stock
binary search brute force data structures +4
2500
2156-D Find the Last Number
binary search bitmasks constructive algorithms +1
1900
2156-C Maximum GCD on Whiteboard
greedy math number theory
1400
2156-B Strange Machine
binary search brute force greedy +1
1000
2156-A Pizza Time
brute force constructive algorithms greedy
800
2155-F Juan's Colorful Tree
data structures dfs and similar dsu +3
2800
2155-E Mimo & Yuyu
games greedy math
2200
2155-D Batteries
brute force constructive algorithms graph matchings +3
1800
2155-C The Ancient Wizards' Capes
brute force greedy implementation
1500
2155-B Abraham's Great Escape
constructive algorithms graphs
1100
2155-A El fucho
implementation math
800
2154-F2 Bombing (Hard Version)
combinatorics dp
3300
2154-F1 Bombing (Easy Version)
brute force combinatorics constructive algorithms +2
2700
2154-E No Mind To Think
binary search divide and conquer greedy +3
2500
2154-D Catshock
constructive algorithms dfs and similar graphs +2
1900
2154-C2 No Cost Too Great (Hard Version)
greedy math number theory
2000
2154-C1 No Cost Too Great (Easy Version)
greedy implementation math +1
1400
2154-B Make it Zigzag
constructive algorithms greedy
1000
2154-A Notelock
greedy two pointers
800
2153-F Odd Queries on Odd Array
bitmasks brute force data structures +2
2900
2153-E Zero Trailing Factorial
brute force math number theory
2400
2153-D Not Alone
dp greedy
1800
2153-C Symmetrical Polygons
constructive algorithms geometry greedy +2
1500