| 
          
         | 
        7012 | 
                
              P449E
  Jzzhu and Squares
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        7005 | 
                
              P451E
  Devu and Flowers
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6985 | 
                
              P456B
  Fedya and Maths
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        6972 | 
                
              P460B
  Little Dima and Equation
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6957 | 
                
              P463E
  Caisa and Tree
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        6919 | 
                
              P472A
  Design Tutorial: Learn from Math
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6907 | 
                
              P474F
  Ant colony
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        6876 | 
                
              P483A
  Counterexample
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6860 | 
                
              P487C
  Prefix Product Sequence
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6847 | 
                
              P490C
  Hacking Cypher
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6846 | 
                
              P490D
  Chocolate
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6824 | 
                
              P495B
  Modular Equations
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6814 | 
                
              P498C
  Array and Operations
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        6813 | 
                
              P498D
  Traffic Jams in the Land
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        6803 | 
                
              P500G
  New Year Running
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6746 | 
                
              P515B
  Drazil and His Happy Friends
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        6741 | 
                
              P516E
  Drazil and His Happy Friends
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6727 | 
                
              P519C
  A and B and Team Training
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        6720 | 
                
              P520E
  Pluses everywhere
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6641 | 
                
              P542D
  Superhero's Job
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6623 | 
                
              P546D
  Soldier and Number Game
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6619 | 
                
              P547C
  Mike and Foam
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6598 | 
                
              P551D
  GukiZ and Binary Operations
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        6594 | 
                
              P552C
  Vanya and Scales
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6565 | 
                
              P559C
  Gerald and Giant Chess
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6555 | 
                
              P566F
  Clique in the Divisibility Graph
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6547 | 
                
              P568A
  Primes or Palindromes?
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6528 | 
                
              P573A
  Bear and Poker
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        6514 | 
                
              P575H
  Bots
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6512 | 
                
              P576A
  Vasya and Petya's Game
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6507 | 
                
              P577A
  Multiplication Table
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6486 | 
                
              P582A
  GCD Table
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6484 | 
                
              P582C
  Superior Periodic Subarrays
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        6483 | 
                
              P582D
  Number of Binominal Coefficients
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6476 | 
                
              P584D
  Dima and Lisa
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6472 | 
                
              P585C
  Alice, Bob, Oranges and Apples
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        6470 | 
                
              P585E
  Present for Vitalik the Philatelist
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6438 | 
                
              P594D
  REQ
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        6401 | 
                
              P603B
  Moodular Arithmetic
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6346 | 
                
              P615D
  Multipliers
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        6340 | 
                
              P616E
  Sum of Remainders
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6318 | 
                
              P621C
  Wet Shark and Flowers
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6308 | 
                
              P623B
  Array GCD
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6295 | 
                
              P626C
  Block Towers
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6273 | 
                
              P630A
  Again Twenty Five!
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6264 | 
                
              P630J
  Divisibility
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6263 | 
                
              P630K
  Indivisibility
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6247 | 
                
              P632D
  Longest Subsequence
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        6244 | 
                
              P633A
  Ebony and Ivory
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6243 | 
                
              P633B
  A Trivial Problem
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        6238 | 
                
              P633G
  Yash And Trees
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6198 | 
                
              P645F
  Cowslip Collections
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        6177 | 
                
              P653G
  Move by Prime
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6162 | 
                
              P659G
  Fence Divercity
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6161 | 
                
              P660A
  Co-prime Array
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        6141 | 
                
              P664A
  Complicated GCD
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6137 | 
                
              P665D
  Simple Subset
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6135 | 
                
              P665F
  Four Divisors
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        6117 | 
                
              P671C
  Ultimate Weirdness of an Array
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        6093 | 
                
              P678C
  Joty and Chocolate
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6092 | 
                
              P678D
  Iterated Linear Function
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        6077 | 
                
              P682A
  Alyona and Numbers
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        6054 | 
                
              P687B
  Remainders Game
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        6021 | 
                
              P691F
  Couple Cover
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        6007 | 
                
              P698F
  Coprime Permutation
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5986 | 
                
              P703E
  Mishka and Divisors
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5971 | 
                
              P707C
  Pythagorean Triples
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        5958 | 
                
              P710D
  Two Arithmetic Progressions
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        5951 | 
                
              P711E
  ZS and The Birthday Paradox
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        5931 | 
                
              P717A
  Festival Organization
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5900 | 
                
              P722F
  Cyclic Cipher
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5891 | 
                
              P724C
  Ray Tracing
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        5887 | 
                
              P724G
  Xor-matic Number of the Graph
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5850 | 
                
              P731F
  Video Cards
         | 
        0 / 0 | 
        6 | 
      
      
        | 
          
         | 
        5830 | 
                
              P735B
  Urbanization
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        5828 | 
                
              P735D
  Taxes
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        5810 | 
                
              P742A
  Arpa’s hard exam and Mehrdad’s naive cheat
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        5809 | 
                
              P742B
  Arpa’s obvious problem and Mehrdad’s terrible solution
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        5806 | 
                
              P743C
  Vladik and fractions
         | 
        0 / 0 | 
        5 | 
      
      
        | 
          
         | 
        5777 | 
                
              P749A
  Bachgold Problem
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        5756 | 
                
              P755A
  PolandBall and Hypothesis
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        5750 | 
                
              P755G
  PolandBall and Many Other Balls
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5744 | 
                
              P756F
  Long number
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5742 | 
                
              P757B
  Bash's Big Day
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        5739 | 
                
              P757E
  Bash Plays with Functions
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        5735 | 
                
              P758B
  Blown Garland
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        5731 | 
                
              P758F
  Geometrical Progression
         | 
        0 / 0 | 
        9 | 
      
      
        | 
          
         | 
        5722 | 
                
              P762A
  k-th divisor
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        5714 | 
                
              P763C
  Timofey and remoduling
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5703 | 
                
              P765G
  Math, math everywhere
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5701 | 
                
              P766B
  Mahmoud and a Triangle
         | 
        0 / 0 | 
        3 | 
      
      
        | 
          
         | 
        5687 | 
                
              P768F
  Barrels and boxes
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        5669 | 
                
              P772C
  Vulnerable Kerbals
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        5661 | 
                
              P773F
  Test Data Generation
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5656 | 
                
              P774E
  Big Number and Remainder
         | 
        0 / 0 | 
        8 | 
      
      
        | 
          
         | 
        5655 | 
                
              P774F
  Pens And Days Of Week
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5654 | 
                
              P774G
  Perfectionist Arkadiy
         | 
        0 / 0 | 
        10 | 
      
      
        | 
          
         | 
        5646 | 
                
              P776B
  Sherlock and his girlfriend
         | 
        0 / 0 | 
        4 | 
      
      
        | 
          
         | 
        5643 | 
                
              P776E
  The Holmes Children
         | 
        0 / 0 | 
        7 | 
      
      
        | 
          
         | 
        5609 | 
                
              P785D
  Anton and School - 2
         | 
        0 / 0 | 
        8 |