ID Problem Show tags Hide tags AC / Tried Difficulty
6890 P661D   Maximal Difference 0 / 0 7
6887 P661E   Divisibility Check 0 / 0 7
6886 P661F   Primes in Interval 0 / 0 6
6884 P661G   Hungarian Notation 0 / 0 8
6882 P661H   Rotate Matrix 0 / 0 9
6881 P662A   Gambling Nim 0 / 0 9
6880 P662B   Graph Coloring 0 / 0 8
6879 P662C   Binary Table 0 / 0 10
6878 P662D   International Olympiad 0 / 0 7
6877 P662E   To Hack or not to Hack 0 / 0 10
6876 P663A   Rebus 0 / 0 6
6875 P664A   Complicated GCD 0 / 0 3
6874 P665A   Buses Between Cities 0 / 0 5
6873 P665B   Shopping 0 / 0 4
6872 P665C   Simple Strings 0 / 0 4
6871 P665D   Simple Subset 0 / 0 6
6870 P665E   Beautiful Subarrays 0 / 0 7
6869 P665F   Four Divisors 0 / 0 9
6868 P666A   Reberland Linguistics 0 / 0 6
6867 P666B   World Tour 0 / 0 7
6866 P666C   Codeword 0 / 0 9
6865 P666D   Chain Reaction 0 / 0 10
6864 P666E   Forensic Examination 0 / 0 10
6863 P667A   Pouring Rain 0 / 0 3
6862 P667B   Coat of Anticubism 0 / 0 3
6861 P669A   Little Artem and Presents 0 / 0 3
6860 P670A   Holidays 0 / 0 3
6859 P670B   Game of Robots 0 / 0 3
6858 P670C   Cinema 0 / 0 4
6857 P670D1   Magic Powder - 1 0 / 0 4
6856 P670D2   Magic Powder - 2 0 / 0 5
6855 P670E   Correct Bracket Sequence Editor 0 / 0 5
6854 P670F   Restore a Number 0 / 0 8
6853 P671A   Recycling Bottles 0 / 0 6
6852 P671B   Robin Hood 0 / 0 7
6851 P671C   Ultimate Weirdness of an Array 0 / 0 10
6850 P671D   Roads in Yusland 0 / 0 10
6849 P671E   Organizing a Race 0 / 0 10
6848 P672A   Summer Camp 0 / 0 3
6847 P672B   Different is Good 0 / 0 3
6846 P673A   Bear and Game 0 / 0 3
6845 P673B   Problems for Round 0 / 0 4
6844 P675A   Infinite Sequence 0 / 0 3
6843 P675B   Restoring Painting 0 / 0 4
6842 P675C   Money Transfers 0 / 0 7
6841 P675D   Tree Construction 0 / 0 6
6840 P675E   Trains and Statistic 0 / 0 8
6839 P676A   Nicholas and Permutation 0 / 0 3
6838 P676B   Pyramid of Glasses 0 / 0 5
6837 P676C   Vasya and String 0 / 0 5
6836 P676D   Theseus and labyrinth 0 / 0 7
6835 P676E   The Last Fight Between Human and AI 0 / 0 9
6834 P677A   Vanya and Fence 0 / 0 3
6833 P677B   Vanya and Food Processor 0 / 0 4
6832 P677C   Vanya and Label 0 / 0 5
6831 P677D   Vanya and Treasure 0 / 0 8
6830 P677E   Vanya and Balloons 0 / 0 8
6829 P678A   Johny Likes Numbers 0 / 0 3
6828 P678B   The Same Calendar 0 / 0 5
6827 P678C   Joty and Chocolate 0 / 0 5
6826 P678D   Iterated Linear Function 0 / 0 5
6825 P678E   Another Sith Tournament 0 / 0 8
6824 P678F   Lena and Queries 0 / 0 9
6823 P679A   Bear and Prime 100 0 / 0 4
6822 P679B   Bear and Tower of Cubes 0 / 0 8
6821 P679C   Bear and Square Grid 0 / 0 9
6820 P679D   Bear and Chase 0 / 0 10
6819 P679E   Bear and Bad Powers of 42 0 / 0 10
6818 P680A   Bear and Five Cards 0 / 0 3
6817 P680B   Bear and Finding Criminals 0 / 0 3
6816 P681A   A Good Contest 0 / 0 3
6815 P681B   Economy Game 0 / 0 4
6814 P681C   Heap Operations 0 / 0 5
6813 P681D   Gifts by the List 0 / 0 7
6812 P681E   Runaway to a Shadow 0 / 0 9
6811 P682A   Alyona and Numbers 0 / 0 3
6810 P682B   Alyona and Mex 0 / 0 4
6809 P682C   Alyona and the Tree 0 / 0 5
6808 P682D   Alyona and Strings 0 / 0 6
6807 P682E   Alyona and Triangles 0 / 0 10
6806 P683A   The Check of the Point 0 / 0 4
6805 P683B   The Teacher of Physical Education 0 / 0 5
6804 P683C   Symmetric Difference 0 / 0 5
6803 P683D   Chocolate Bar 0 / 0 4
6802 P683E   Hammer throwing 0 / 0 6
6801 P683F   Reformat the String 0 / 0 6
6800 P683G   The Fraction 0 / 0 6
6799 P683H   Exchange of Books 0 / 0 6
6798 P683I   Loader 0 / 0 9
6797 P683J   The Hero with Bombs 0 / 0 10
6796 P685A   Robbers' watch 0 / 0 5
6795 P685B   Kay and Snowflake 0 / 0 6
6794 P685C   Optimal Point 0 / 0 10
6793 P685D   Kay and Eternity 0 / 0 10
6792 P685E   Travelling Through the Snow Queen's Kingdom 0 / 0 10
6791 P686A   Free Ice Cream 0 / 0 3
6790 P686B   Little Robber Girl's Zoo 0 / 0 3
6789 P687A   NP-Hard Problem 0 / 0 5
6788 P687B   Remainders Game 0 / 0 6
6787 P687C   The Values You Can Make 0 / 0 6

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