Write the method that calculates greater common divisor for two integers greater or equal to 1 and less than 1048576.

() recv_internal() { } (int) gcd(int a, int b) method_id { }

Write the method that merges two hashmaps into one. When keys of hashmaps interesect - values from first hashmap should be used, while discarded key/value pairs should be stored into separate hashmap. Method should return two hashmaps (merged_dict, discared_dict). If any of resulting hashmaps is empty it should be represented by null value. Hashmap key length is 256 bit. Each hashmap has at most 256 elements.

() recv_internal() { } (cell, cell) merge_hashmaps(cell dict1, cell dict2) method_id { }

Write the method that checks that cell contains valid message in accordance to repository If message is invalid for any reason - method should return (0, null), otherwise it should return (-1, [slice src, slice dest, int amount] ), where src, dest and amount represents source of the message, destination of the message and attached amount of TONs. If any of those values are not presented (or presented as addr_none slice) in the message cell - they should be substituted with null. It is guaranteed that for all tests any HashmapE datatype in message structure is empty hashmaps (has hme_empty constructor).

() recv_internal() { } (int, tuple) validate_message(cell message) method_id { }

Write the methods: a) for serialization of tuple of arbitrary values of different types to Cell b) for deserialization of Cell created by method above to original tuple

serialize method gets as input tuple with arbitrary number of elements from 0 to 128 (both 0 and 128 elements are allowed) and outputs Cell. Elements of the tuple may be null, int, cell, slice, tuple (with the same limitations as original tuple). It is guaranteed that the maximum nesting level of tuples is less than 4 and total number of elements less than 1024. deserialize method gets a cell produced by serialize method and should return origin tuple.

() recv_internal() { } (cell) serialize(tuple values) method_id { } (tuple) deserialize(cell serialized) method_id { }

Write the method that for any valid MsgAddressInt with addr_std constructor (check out the repository) returns the slice that contain ASCII encoded base64url user-friendly bouncable address (without test-only flag), check out the documentation

() recv_internal() { } (slice) encode_address(slice Address) method_id { }