Решение задачи ExamBegin40

uses PT4Exam;

const
  R = 100;

var
  m: array[1..R] of integer;
  n, i, j, h: integer;
  k: boolean;

begin
  Task('ExamBegin40');
  h := 0;
  Readln(n);
  for i := 1 to n do
    Read(m[i]);
  for i := 1 to n do
  begin
    k := true;
    for j := 1 to n do
      if (m[i] = m[j]) and (i <> j) then k := false;
    if k = true then h := h + 1;
  end;
  Write(h);
end.