View Compilation Error

0_0_2882446_12037\Main.java:20: 需要 ']'
				a[t.charAt(0)-'A'] = a[t.charAt(0) - 'A'].add(a[t.charAt(3)-'A')];
				                                                               ^
0_0_2882446_12037\Main.java:20: 需要 ';'
				a[t.charAt(0)-'A'] = a[t.charAt(0) - 'A'].add(a[t.charAt(3)-'A')];
				                                                                ^
2 错误