26 54419558400 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAACCAAAAAAAAAAAAACCCAAAAAAAAAAAAACCCCAAAAAAAAAAAAACCCCCAAAAAAAAAAAAACCCCCCAAAAAAAAAAAAACCCCCCCAAAAAAAAAAAAACCCCCCCCAAAAAAAAAAAAACCCCCCCCCAAAAAAAAAAAAACCCCCCCCCCAAAAAAAAAAAAACCCCCCCCCCCAAAAAAAAAAAAAC Optimal