Input (grade 10): Ã coust-Saint-Mein is a commune in the Pas-de-Calais dÃ partement in the Nord-Pas-de-Calais region of France.
Output (grade 6): Ã coust-Saint-Mein is a commune. It is found in the region Nord-Pas-de-Calais in the Pas-de-Calais department in the north of France.