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# Problem Tags Rating Solved
137-A Postcards and photos
implementation
900
136-B Ternary Logic
implementation math
1100
136-A Presents
implementation
800
135-E Weak Subsequence
combinatorics
3000
135-D Cycle
brute force dfs and similar implementation
2500
135-C Zero-One
constructive algorithms games greedy
1900
135-B Rectangle and Square
brute force geometry math
1600
135-A Replacement
greedy implementation sortings
1300
134-C Swaps
constructive algorithms graphs greedy
2200
134-B Pairs of Numbers
brute force dfs and similar math +1
1900
134-A Average Numbers
brute force implementation
1200
133-B Unary
implementation
1200
133-A HQ9+
implementation
900
132-E Bits of merry old England
flows graphs
2700
132-D Constants in the language of Shakespeare
constructive algorithms dp greedy
2100
132-C Logo Turtle
dp
1800
132-B Piet
implementation
2100
132-A Turing Tape
implementation
1300
131-F Present to Mom
binary search two pointers
2000
131-E Yet Another Task with Queens
sortings
1700
131-D Subway
dfs and similar graphs
1600
131-C The World is a Theatre
combinatorics math
1400
131-B Opposites Attract
implementation math
1200
131-A cAPS lOCK
implementation strings
1000
130-J Date calculation
*special
1800
130-I Array sorting
*special sortings
2300
130-H Balanced brackets
*special
1600
130-G CAPS LOCK ON
*special
1700
130-F Prime factorization
*special
1600
130-E Tribonacci numbers
*special
1600
130-D Exponentiation
*special
1500
130-C Decimal sum
*special
1500
130-B Gnikool Ssalg
*special implementation strings
1400
130-A Hexagonal numbers
*special implementation
900
129-B Students and Shoelaces
brute force dfs and similar graphs +1
1200
129-A Cookies
implementation
900
128-E Birthday
geometry math
2900
128-D Numbers
constructive algorithms implementation
2000
128-C Games with Rectangle
combinatorics dp
2000
128-B String
brute force constructive algorithms hashing +3
2100
128-A Statues
dfs and similar
1500
127-B Canvas Frames
implementation
1000
127-A Wasted Time
geometry
900
126-E Pills
brute force flows
2900
126-D Fibonacci Sums
dp math
2300
126-C E-reader Display
constructive algorithms greedy
2000
126-B Password
binary search dp hashing +2
1700
126-A Hot Bath
binary search brute force math
1900
125-E MST Company
binary search graphs
2400
125-D Two progressions
constructive algorithms greedy
2200