The Civil Services Examination (CSE) is a nationwide competitive examination in India conducted by the Union Public Service Commission for recruitment to various Civil Services of the Government of India, including the Indian Administrative Service (IAS), Indian Foreign Service (IFS), and Indian Police Service (IPS). Also simply referred to as the UPSC examination. It is considered to be the most difficult competitive examination in India. A single attempt takes two complete years of preparation - one year before the prelims and one year from prelims to interview. In total, one sits in actual exam for 32 hours from prelims till interview. On average, 900,000 to 1,000,000 candidates apply every year and the number of candidates sitting in the preliminary examination is approximately 550,000.