{"raw_statement":[{"iden":"problem statement","content":"You are given a sequence of three numbers: $A=(A_1,A_2,A_3)$.\nIs it possible to rearrange the elements of $A$ into an arithmetic sequence?\nIn other words, is it possible to rearrange the elements of $A$ so that $A_3-A_2=A_2-A_1$?"},{"iden":"constrains","content":"*   $1 \\leq A_i \\leq 100$\n*   All values in input are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$A_1$ $A_2$ $A_3$"},{"iden":"sample input 1","content":"5 1 3"},{"iden":"sample output 1","content":"Yes\n\nWe can rearrange them into an arithmetic sequence by, for example, making it $(1,3,5)$."},{"iden":"sample input 2","content":"1 4 3"},{"iden":"sample output 2","content":"No\n\nThere is no way to rearrange them into an arithmetic sequence."},{"iden":"sample input 3","content":"5 5 5"},{"iden":"sample output 3","content":"Yes\n\nAll elements of $A$ may be equal, or $A$ may be an arithmetic sequence already."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}