p = input().split() index_A = [] index_B = [] for i in range(1, len(p)): if p[i].upper() == 'A': index_A.append(i) elif p[i].upper() == 'B': index_B.append(i) lenp = len(p) + len(index_A) + len(index_B) p.pop(0) print(format(lenp, 'X'), end=' ') for i in p: if i.upper() == 'A': print('12', '13', end=' ') elif i.upper() == 'B': print('AB', 'CD', end=' ') else: print(i, end=' ')我这样只有40...