|
|
6845 |
P449E Jzzhu and Squares
|
0 / 0 |
CTSC
|
|
|
6838 |
P451E Devu and Flowers
|
1 / 1 |
省选
|
|
|
6818 |
P456B Fedya and Maths
|
0 / 0 |
普及-
|
|
|
6805 |
P460B Little Dima and Equation
|
0 / 0 |
普及
|
|
|
6790 |
P463E Caisa and Tree
|
0 / 0 |
提高
|
|
|
6752 |
P472A Design Tutorial: Learn from Math
|
0 / 0 |
普及-
|
|
|
6740 |
P474F Ant colony
|
0 / 0 |
提高
|
|
|
6709 |
P483A Counterexample
|
0 / 0 |
普及-
|
|
|
6693 |
P487C Prefix Product Sequence
|
0 / 0 |
省选
|
|
|
6680 |
P490C Hacking Cypher
|
0 / 0 |
普及
|
|
|
6679 |
P490D Chocolate
|
0 / 0 |
普及
|
|
|
6657 |
P495B Modular Equations
|
0 / 0 |
普及
|
|
|
6647 |
P498C Array and Operations
|
0 / 0 |
提高
|
|
|
6646 |
P498D Traffic Jams in the Land
|
0 / 0 |
NOI
|
|
|
6636 |
P500G New Year Running
|
0 / 0 |
CTSC
|
|
|
6579 |
P515B Drazil and His Happy Friends
|
0 / 0 |
普及-
|
|
|
6574 |
P516E Drazil and His Happy Friends
|
0 / 0 |
CTSC
|
|
|
6565 |
P519C A and B and Team Training
|
0 / 0 |
普及-
|
|
|
6558 |
P520E Pluses everywhere
|
0 / 0 |
省选
|
|
|
6479 |
P542D Superhero's Job
|
0 / 0 |
CTSC
|
|
|
6461 |
P546D Soldier and Number Game
|
0 / 0 |
普及
|
|
|
6457 |
P547C Mike and Foam
|
0 / 0 |
省选
|
|
|
6436 |
P551D GukiZ and Binary Operations
|
0 / 0 |
提高
|
|
|
6432 |
P552C Vanya and Scales
|
0 / 0 |
普及
|
|
|
6403 |
P559C Gerald and Giant Chess
|
0 / 0 |
省选
|
|
|
6393 |
P566F Clique in the Divisibility Graph
|
0 / 0 |
普及
|
|
|
6385 |
P568A Primes or Palindromes?
|
0 / 0 |
普及
|
|
|
6366 |
P573A Bear and Poker
|
0 / 0 |
普及-
|
|
|
6352 |
P575H Bots
|
0 / 0 |
普及
|
|
|
6350 |
P576A Vasya and Petya's Game
|
0 / 0 |
普及
|
|
|
6345 |
P577A Multiplication Table
|
0 / 0 |
普及-
|
|
|
6324 |
P582A GCD Table
|
0 / 0 |
普及
|
|
|
6322 |
P582C Superior Periodic Subarrays
|
0 / 0 |
NOI
|
|
|
6321 |
P582D Number of Binominal Coefficients
|
0 / 0 |
CTSC
|
|
|
6314 |
P584D Dima and Lisa
|
0 / 0 |
普及
|
|
|
6310 |
P585C Alice, Bob, Oranges and Apples
|
0 / 0 |
NOI
|
|
|
6308 |
P585E Present for Vitalik the Philatelist
|
0 / 0 |
CTSC
|
|
|
6276 |
P594D REQ
|
0 / 0 |
NOI
|
|
|
6239 |
P603B Moodular Arithmetic
|
0 / 0 |
普及
|
|
|
6184 |
P615D Multipliers
|
0 / 0 |
提高
|
|
|
6178 |
P616E Sum of Remainders
|
0 / 0 |
省选
|
|
|
6156 |
P621C Wet Shark and Flowers
|
0 / 0 |
普及
|
|
|
6146 |
P623B Array GCD
|
0 / 0 |
省选
|
|
|
6133 |
P626C Block Towers
|
0 / 0 |
普及
|
|
|
6111 |
P630A Again Twenty Five!
|
0 / 0 |
普及-
|
|
|
6102 |
P630J Divisibility
|
0 / 0 |
普及-
|
|
|
6101 |
P630K Indivisibility
|
0 / 0 |
普及
|
|
|
6085 |
P632D Longest Subsequence
|
0 / 0 |
提高
|
|
|
6082 |
P633A Ebony and Ivory
|
0 / 0 |
普及-
|
|
|
6081 |
P633B A Trivial Problem
|
0 / 0 |
普及-
|
|
|
6076 |
P633G Yash And Trees
|
0 / 0 |
CTSC
|
|
|
6036 |
P645F Cowslip Collections
|
0 / 0 |
NOI
|
|
|
6015 |
P653G Move by Prime
|
0 / 0 |
CTSC
|
|
|
6000 |
P659G Fence Divercity
|
0 / 0 |
省选
|
|
|
5999 |
P660A Co-prime Array
|
0 / 0 |
普及-
|
|
|
5979 |
P664A Complicated GCD
|
0 / 0 |
普及-
|
|
|
5975 |
P665D Simple Subset
|
0 / 0 |
普及
|
|
|
5973 |
P665F Four Divisors
|
0 / 0 |
NOI
|
|
|
5955 |
P671C Ultimate Weirdness of an Array
|
0 / 0 |
CTSC
|
|
|
5931 |
P678C Joty and Chocolate
|
0 / 0 |
普及
|
|
|
5930 |
P678D Iterated Linear Function
|
0 / 0 |
普及
|
|
|
5915 |
P682A Alyona and Numbers
|
0 / 0 |
普及-
|
|
|
5892 |
P687B Remainders Game
|
0 / 0 |
普及
|
|
|
5859 |
P691F Couple Cover
|
0 / 0 |
省选
|
|
|
5845 |
P698F Coprime Permutation
|
0 / 0 |
CTSC
|
|
|
5824 |
P703E Mishka and Divisors
|
0 / 0 |
CTSC
|
|
|
5809 |
P707C Pythagorean Triples
|
0 / 0 |
普及
|
|
|
5796 |
P710D Two Arithmetic Progressions
|
0 / 0 |
NOI
|
|
|
5789 |
P711E ZS and The Birthday Paradox
|
0 / 0 |
省选
|
|
|
5769 |
P717A Festival Organization
|
0 / 0 |
CTSC
|
|
|
5738 |
P722F Cyclic Cipher
|
0 / 0 |
CTSC
|
|
|
5729 |
P724C Ray Tracing
|
0 / 0 |
普及
|
|
|
5725 |
P724G Xor-matic Number of the Graph
|
0 / 0 |
CTSC
|
|
|
5688 |
P731F Video Cards
|
0 / 0 |
普及
|
|
|
5668 |
P735B Urbanization
|
0 / 0 |
普及-
|
|
|
5666 |
P735D Taxes
|
0 / 0 |
普及
|
|
|
5648 |
P742A Arpa’s hard exam and Mehrdad’s naive cheat
|
0 / 0 |
普及-
|
|
|
5647 |
P742B Arpa’s obvious problem and Mehrdad’s terrible solution
|
0 / 0 |
普及
|
|
|
5644 |
P743C Vladik and fractions
|
0 / 0 |
普及
|
|
|
5615 |
P749A Bachgold Problem
|
0 / 0 |
普及-
|
|
|
5594 |
P755A PolandBall and Hypothesis
|
0 / 0 |
普及-
|
|
|
5588 |
P755G PolandBall and Many Other Balls
|
0 / 0 |
CTSC
|
|
|
5582 |
P756F Long number
|
0 / 0 |
CTSC
|
|
|
5580 |
P757B Bash's Big Day
|
0 / 0 |
普及-
|
|
|
5577 |
P757E Bash Plays with Functions
|
0 / 0 |
NOI
|
|
|
5573 |
P758B Blown Garland
|
0 / 0 |
普及-
|
|
|
5569 |
P758F Geometrical Progression
|
0 / 0 |
NOI
|
|
|
5560 |
P762A k-th divisor
|
0 / 0 |
普及-
|
|
|
5552 |
P763C Timofey and remoduling
|
0 / 0 |
CTSC
|
|
|
5541 |
P765G Math, math everywhere
|
0 / 0 |
CTSC
|
|
|
5539 |
P766B Mahmoud and a Triangle
|
0 / 0 |
普及-
|
|
|
5525 |
P768F Barrels and boxes
|
0 / 0 |
省选
|
|
|
5507 |
P772C Vulnerable Kerbals
|
0 / 0 |
省选
|
|
|
5499 |
P773F Test Data Generation
|
0 / 0 |
CTSC
|
|
|
5494 |
P774E Big Number and Remainder
|
0 / 0 |
省选
|
|
|
5493 |
P774F Pens And Days Of Week
|
0 / 0 |
CTSC
|
|
|
5492 |
P774G Perfectionist Arkadiy
|
0 / 0 |
CTSC
|
|
|
5484 |
P776B Sherlock and his girlfriend
|
0 / 0 |
普及-
|
|
|
5481 |
P776E The Holmes Children
|
0 / 0 |
提高
|
|
|
5447 |
P785D Anton and School - 2
|
0 / 0 |
省选
|
