{"trustable":false,"sections":[{"title":"","value":{"format":"PLAIN","content":"小A打字时有不看屏幕的习惯。在一次小A打字时,调皮的小B常常趁小A不注意按下Home键和End键。当Home键被按下时,输入光标会跳到文本最开头;当End键被按下时,输入光标会跳到文本末尾。现给出若干行按键的字符串,其中\u0027[\u0027表示Home键,\u0027]\u0027表示End键,其余字符均表示输入的内容,每行字符串长度不超过100000,问最终显示的文本是什么。\n"}},{"title":"输入格式","value":{"format":"PLAIN","content":"多组数据,处理到EOF为止\n每组数据占一行,是一个长度不超过100000、只包含大小写字母、下划线以及\u0027[\u0027和‘]’的字符串。"}},{"title":"输出格式","value":{"format":"PLAIN","content":"对于每组数据,输出一行最终显示的字符串。"}},{"title":"输入样例","value":{"format":"PLAIN","content":"This_is_a_[simple_sample]_text\n[][][[]][]Good_luck_to_you\nabcd[efghi]jklm[nopq]rs[t]uvwxyz\n"}},{"title":"输出样例","value":{"format":"PLAIN","content":"simple_sampleThis_is_a__text\nGood_luck_to_you\ntnopqefghiabcdjklmrsuvwxyz"}}]}