Input (grade 12): Drogheda () (Droichead Átha in Irish, meaning "Bridge of the Ford") is an industrial and port town in County Louth on the east coast of Ireland, 56 km (35 mi) north of Dublin.
Output (grade 11): Drogheda () or) (Droichead Átha in Irish, meaning "Bridge of the Ford") is an industrial and port town in County Louth on the east coast of Ireland, 56 km (35 mi) north of Dublin.