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# Problem Tags Rating Solved
1850-F We Were Both Children
brute force implementation math +1
1300
1850-E Cardboard for Pictures
binary search geometry implementation +1
1100
1850-D Balanced Round
brute force greedy implementation +1
900
1850-C Word on the Paper
implementation strings
800
1850-B Ten Words of Wisdom
implementation sortings
800
1850-A To My Critics
implementation sortings
800
1849-F XOR Partition
binary search bitmasks data structures +3
2700
1849-E Max to the Right of Min
binary search data structures divide and conquer +3
2300
1849-D Array Painting
constructive algorithms greedy two pointers
1700
1849-C Binary String Copying
binary search brute force data structures +2
1600
1849-B Monsters
greedy math sortings
1000
1849-A Morning Sandwich
implementation math
800
1848-F Vika and Wiki
binary search bitmasks combinatorics +3
2400
1848-E Vika and Stone Skipping
brute force implementation math +1
2600
1848-D Vika and Bonuses
binary search brute force math +1
2200
1848-C Vika and Price Tags
math number theory
1800
1848-B Vika and the Bridge
binary search data structures greedy +3
1200
1848-A Vika and Her Friends
games math
900
1847-F The Boss's Identity
binary search bitmasks data structures +4
2500
1847-E Triangle Platinum?
brute force combinatorics implementation +3
2900
1847-D Professor Higashikata
data structures dsu greedy +2
1900
1847-C Vampiric Powers, anyone?
bitmasks brute force dp +1
1400
1847-B Hamon Odyssey
bitmasks greedy two pointers
1000
1847-A The Man who became a God
greedy sortings
800
1846-G Rudolf and CodeVid-23
bitmasks dp graphs +2
1900
1846-F Rudolph and Mimic
constructive algorithms implementation interactive
1800
1846-E2 Rudolf and Snowflakes (hard version)
binary search brute force implementation +1
1800
1846-E1 Rudolf and Snowflakes (simple version)
brute force implementation math
1300
1846-D Rudolph and Christmas Tree
constructive algorithms geometry math
1200
1846-C Rudolf and the Another Competition
constructive algorithms data structures dp +2
1200
1846-B Rudolph and Tic-Tac-Toe
brute force implementation strings
800
1846-A Rudolph and Cut the Rope
implementation math
800
1845-F Swimmers in the Pool
dp fft math +1
2800
1845-E Boxes and Balls
dp implementation math
2500
1845-D Rating System
binary search brute force data structures +5
1800
1845-C Strong Password
binary search dp greedy +1
1400
1845-B Come Together
geometry implementation math
900
1845-A Forbidden Integer
constructive algorithms implementation math +1
800
1844-H Multiple of Three Cycles
combinatorics data structures dp +2
3400
1844-G Tree Weights
bitmasks constructive algorithms data structures +6
3000
1844-F2 Min Cost Permutation (Hard Version)
binary search constructive algorithms data structures +3
2800
1844-F1 Min Cost Permutation (Easy Version)
brute force constructive algorithms greedy +1
2600
1844-E Great Grids
2-sat constructive algorithms dfs and similar +2
2400
1844-D Row Major
constructive algorithms greedy math +2
1400
1844-C Particles
dp greedy implementation +1
1300
1844-B Permutations & Primes
constructive algorithms math
1000
1844-A Subtraction Game
constructive algorithms games
800
1843-F2 Omsk Metro (hard version)
data structures dfs and similar divide and conquer +3
2300
1843-F1 Omsk Metro (simple version)
data structures dfs and similar dp +4
1800
1843-E Tracking Segments
binary search brute force data structures +1
1600