CodeForces Questions Solution
1801. 1979B - XOR Sequences
771802. 143D - Help General
771803. 1342B - Binary Period
771804. 455B - A Lot of Games
771805. 638B - Making Genome in Berland
771806. 667A - Pouring Rain
771807. 587A - Duff and Weight Lifting
771808. 975B - Mancala
771809. 454C - Little Pony and Expected Maximum
771810. 685E - Travelling Through the Snow Queen's Kingdom
771811. 1551E - Fixed Points
771812. 426B - Sereja and Mirroring
771813. 1823C - Strongly Composite
771814. 1361A - Johnny and Contribution
771815. 652A - Gabriel and Caterpillar
771816. 991B - Getting an A
771817. 1166B - All the Vowels Please
771818. 313D - Ilya and Roads
771819. 371D - Vessels
771820. 1266C - Diverse Matrix
771821. 20A - BerOS file system
771822. 1423H - Virus
771823. 1895F - Fancy Arrays
771824. 1774B - Coloring
771825. 1647C - Madoka and Childish Pranks
771826. 1538E - Funny Substrings
771827. 1523B - Lord of the Values
771828. 1264A - Beautiful Regional Contest
771829. 1388C - Uncle Bogdan and Country Happiness
771830. 45I - TCMCF+++
771831. 1617A - Forbidden Subsequence
771832. 1624F - Interacdive Problem
771833. 555B - Case of Fugitive
771834. 1828F - Two Centroids
771835. 1513C - Add One
771836. 254D - Rats
771837. 464E - The Classic Problem
771838. 1141C - Polycarp Restores Permutation
771839. 1667C - Half Queen Cover
771840. 1538D - Another Problem About Dividing Numbers
771841. 1694D - Fake Plastic Trees
771842. 915A - Garden
771843. 923B - Producing Snow
771844. 1099C - Postcard
771845. 527A - Playing with Paper
771846. 920C - Swap Adjacent Elements
771847. 660F - Bear and Bowling 4
771848. 1228C - Primes and Multiplication
771849. 400A - Inna and Choose Options
771850. 621C - Wet Shark and Flowers
771851. 746F - Music in Car
771852. 1396A - Multiples of Length
771853. 477D - Dreamoon and Binary
771854. 107A - Dorm Water Supply
771855. 1205B - Shortest Cycle
771856. 1527D - MEX Tree
781857. 1325B - CopyCopyCopyCopyCopy
781858. 1395C - Boboniu and Bit Operations
781859. 1704E - Count Seconds
781860. 528C - Data Center Drama
781861. 1215B - The Number of Products
781862. 1660E - Matrix and Shifts
781863. 1584A - Mathematical Addition
781864. 1401D - Maximum Distributed Tree
781865. 1762D - GCD Queries
781866. 58C - Trees
781867. 732C - Sanatorium
781868. 1621B - Integers Shop
781869. 1698D - Fixed Point Guessing
781870. 761C - Dasha and Password
781871. 278C - Learning Languages
781872. 938D - Buy a Ticket
781873. 903A - Hungry Student Problem
781874. 244B - Undoubtedly Lucky Numbers
781875. 338E - Optimize
781876. 1535E - Gold Transfer
781877. 1530H - Turing's Award
781878. 1696C - Fishingprince Plays With Array
781879. 194A - Exams
781880. 1417D - Make Them Equal
781881. 1784D - Wooden Spoon
781882. 281D - Maximum Xor Secondary
781883. 41C - Email address
781884. 33B - String Problem
781885. 1030F - Putting Boxes Together
781886. 1746C - Permutation Operations
781887. 840A - Leha and Function
781888. 1466F - Euclid's nightmare
781889. 988F - Rain and Umbrellas
781890. 1370D - Odd-Even Subsequence
781891. 1062C - Banh-mi
781892. 557A - Ilya and Diplomas
781893. 994C - Two Squares
781894. 1328E - Tree Queries
781895. 142B - Help General
781896. 1921G - Mischievous Shooter
781897. 615C - Running Track
781898. 1030E - Vasya and Good Sequences
781899. 1674E - Breaking the Wall
781900. 53B - Blog Photo
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