program HelloWorld;
const N = 30;
var
  A    : array[1..N] of integer;
  max1, max2 : integer;
begin
for i := 1 to N do
 readln(A[i]);

max1 := A[1];
for i := 2 to N do begin
 if(A[i] > max1) then max1 := A[i]
end;

max2 := A[1]
for i := 2 to N do begin
 if(A[i] > max2 and max2 < max1) then max2 := A[i]
end;
 
end;

end.