{"raw_statement":[{"iden":"statement","content":"You are given an encrypted string, encrypted using a certain algorithm. Decrypt it!\n\nThe first and single line of input contains a string s, which each of it's characters is an English letter or a digit or  +  or  =  or  / . (1 ≤ |s| ≤ 105)\n\nPrint the original string.\n\n"},{"iden":"input","content":"The first and single line of input contains a string s, which each of it's characters is an English letter or a digit or  +  or  =  or  / . (1 ≤ |s| ≤ 105)"},{"iden":"output","content":"Print the original string."},{"iden":"examples","content":"InputY2hhcnplaA==OutputcharzehInputeW91c2VmaQ==OutputyousefiInputbW10Outputmmt"}],"translated_statement":null,"sample_group":[],"show_order":[],"formal_statement":"**Definitions**  \nLet $ s \\in \\Sigma^* $ be the encrypted string, where $ \\Sigma = \\{ \\text{a-z, A-Z, 0-9, +, =, /} \\} $ and $ 1 \\leq |s| \\leq 10^5 $.\n\n**Constraints**  \n1. $ s $ consists only of characters from $ \\Sigma $.  \n2. $ s $ is a valid Base64-encoded string.\n\n**Objective**  \nDecode $ s $ using Base64 decoding to recover the original string $ s_{\\text{orig}} $:  \n$$ s_{\\text{orig}} = \\text{Base64Decode}(s) $$","simple_statement":"Decrypt the given string and print the original.","has_page_source":false}