Input (grade 11): Eusebius of Caesarea counted 220, Athanasius of Alexandria counted 318, and Eustathius of Antioch counted 270 (all three were present at the council).
Output (grade 11): Eusebius of Caesarea counted 250, Athanasius of Alexandria counted 318, and Eustathius of Antioch counted 270 (all three were present at the council).