uses crt;
function tamGiacVuong(a,b,c: longint): boolean;
begin
    if (a + b <= c) or (a + c <= b) or (b + c <= a) then exit(false);
    if (a*a = b*b + c*c) or (b*b = a*a + c*c) or (c*c = a*a + b*b) then
        exit(true)
    else exit(false);
end;
var n,i: integer;
    a: array[1..1000] of longint;
begin
    assign(input, 'TAMGIACV.INP'); reset(input);
    assign(output, 'TAMGIACV.OUT'); rewrite(output);
    readln(n);
    for i := 1 to n do read(a[i]);
    for i := 1 to n - 3 do
        if (tamGiacVuong(a[i],a[i + 1],a[i + 2])) then
            writeln(a[i],' ',a[i + 1],' ',a[i + 2]);
end.