open Printf
let rec(@)d i=let b,a=modf(d**(1./.i)+.0.00001)in
b<0.0001&()=printf" %.f^%.f"a i;a>1.&d@i+.1.||(printf"
";!0)and(!)?(s=read_line())x=printf"%s ="s;float_of_string s@2.;;!0