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# Problem Tags Rating Solved
77-A Heroes
brute force implementation
1400
76-F Tourist
binary search data structures dp
2300
76-E Points
implementation math
1700
76-D Plus and xor
dp greedy math
1700
76-C Mutation
bitmasks dp math
2700
76-B Mice
greedy two pointers
2100
76-A Gift
dsu graphs sortings +1
2200
75-E Ship's Shortest Path
geometry shortest paths
2400
75-D Big Maximum Sum
data structures dp greedy +3
2000
75-C Modified GCD
binary search number theory
1600
75-B Facetook Priority Wall
expression parsing implementation strings
1500
75-A Life Without Zeros
implementation
1000
74-E Shift It!
constructive algorithms
2800
74-D Hanger
data structures
2400
74-C Chessboard Billiard
dfs and similar dsu graphs +1
2100
74-B Train
dp games greedy
1500
74-A Room Leader
implementation
1000
73-F Plane of Tanks
brute force geometry
2900
73-E Morrowindows
math number theory
2400
73-D FreeDiv
dfs and similar graphs greedy
2200
73-C LionAge II
dp
1800
73-B Need For Brake
binary search greedy sortings
2000
73-A The Elder Trolls IV: Oblivon
greedy math
1600
72-I Goofy Numbers
*special implementation
1500
72-H Reverse It!
*special implementation
1600
72-G Fibonacci army
*special dp
1000
72-F Oil
*special greedy math
1900
72-E Ali goes shopping
*special brute force strings
1800
72-D Perse-script
*special expression parsing
2300
72-C Extraordinarily Nice Numbers
*special math
1200
72-B INI-file
*special implementation
2200
72-A Goshtasp, Vishtasp and Eidi
*special greedy math
1800
71-E Nuclear Fusion
bitmasks dp
2200
71-D Solitaire
brute force implementation
2200
71-C Round Table Knights
dp math number theory
1600
71-B Progress Bar
implementation math
1300
71-A Way Too Long Words
strings
800
70-E Information Reform
dp implementation trees
2700
70-D Professor's task
data structures geometry
2700
70-C Lucky Tickets
binary search data structures sortings +1
2200
70-B Text Messaging
expression parsing greedy strings
1600
70-A Cookies
math
1300
69-E Subsegments
data structures implementation
1800
69-D Dot
dp games
1900
69-C Game
implementation
2000
69-B Bets
greedy implementation
1200
69-A Young Physicist
implementation math
1000
68-E Contact
geometry
2900
68-D Half-decay tree
data structures divide and conquer dp +2
2500
68-C Synchrophasotron
brute force
2200