{"raw_statement":[{"iden":"statement","content":"While preparing for Chemistry Lab in Science Olympiad, you are taught to \"cross your charges\" when calculating the molecular coefficients given the charges: using the charges of two bonded ions, you swap the two values to obtain the molecular coefficients. For example, a molecule made of two ions with charges of 4 and 3 would have coefficients of 3 and 4, respectively.\n\nThe only line of input contains two space-separated integers _a_ and _b_ representing the charges of _a_ and _b_, respectively.\n\nOutput two space-separated integers _c_ and _d_: the coefficients of each ion given their charges. These can be calculated by swapping _a_ and _b_ (crossing the charges).\n\n"},{"iden":"input","content":"The only line of input contains two space-separated integers _a_ and _b_ representing the charges of _a_ and _b_, respectively."},{"iden":"output","content":"Output two space-separated integers _c_ and _d_: the coefficients of each ion given their charges. These can be calculated by swapping _a_ and _b_ (crossing the charges)."}],"translated_statement":null,"sample_group":[],"show_order":[],"formal_statement":"**Definitions**  \nLet $ a, b \\in \\mathbb{Z} $ be the charges of two ions.\n\n**Objective**  \nCompute $ c = b $, $ d = a $.","simple_statement":"Swap two numbers a and b, then print b and a.","has_page_source":false}