program Project5;
{$APPTYPE CONSOLE}
var a,b,c:real;
begin
writeln('Vvedit chysla a,b,c');
readln(a,b,c);
if (a=1/b) or (b=1/c) or (c=1/a) then
writeln('E') else
writeln('Nemae');
readln;
end.