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history_source/信息学奥赛一本通/2.4.6.cpp

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+#include<iostream>
+using namespace std;
+struct Q
+{
+	char c;
+	int site;
+};
+namespace myDef
+{
+	template<class T_queue>
+	struct Node_queue
+	{
+		T_queue num;
+		Node_queue *next=0;
+	};
+	template<class a_queue>
+	struct queue
+	{
+		Node_queue<a_queue> *head=0,*tail=0,*L=0;
+		bool isn=0;
+		int SIZE_queue;
+		void beginning()
+		{
+			head=tail=new Node_queue<a_queue>;
+			tail->next=head;
+			SIZE_queue=0;
+			isn=1;
+		}
+		bool push(a_queue s)
+		{
+			SIZE_queue++;
+			tail->num=s;
+			if(tail->next==head)
+			{
+				tail->next=new Node_queue<a_queue>;
+				tail->next->next=head;
+				L=tail;
+				tail=tail->next;
+				return 1;
+			}
+			L=tail;
+			tail=tail->next;
+			return 0;
+		}
+		bool pop()
+		{
+			if(head==tail) return 1;
+			head=head->next;
+			SIZE_queue--;
+			return 0;
+		} 
+		a_queue& front()
+		{
+			return head->num;
+		} 
+		a_queue& back()
+		{
+			return L->num;
+		}
+		int size()
+		{
+			return SIZE_queue;
+		}
+		void clear()
+		{
+			SIZE_queue=0;
+			tail=head;
+		}
+		a_queue& operator[](unsigned int w)
+		{
+			w=w%SIZE_queue;
+			Node_queue<a_queue> *p=head;
+			for(int i=0;i<w;i++) p=p->next;
+			return p->num;
+		}
+		void operator()()
+		{
+			beginning();
+		}
+		bool empty()
+		{
+			return (SIZE_queue==0);
+		}
+		bool operator=(myDef::queue<a_queue>b)
+		{
+			if(!isn)
+			{
+				this->beginning();
+				isn=1;
+			}
+			this->clear();
+			Node_queue<a_queue> *p=b.head;
+			while(p!=b.tail)
+			{
+				this->push(p->num);
+				p=p->next;
+			}
+		}
+	};
+}
+using myDef::queue;
+int main()
+{
+	ios::sync_with_stdio(0);
+	string sr;
+	queue<string>ss;
+	ss();
+	while(cin>>sr) ss.push(sr);
+	Q zhan[sr.size()+10],x;
+	int top;
+	while(ss.size()>0)
+	{
+		top=0;
+		sr=ss.front();
+		ss.pop();
+		for(int i=0;i<sr.size();i++)
+		{
+			if(sr[i]=='(')
+			{
+				x.c='(';
+				x.site=i;
+				zhan[top++]=x;
+			}
+			if(sr[i]==')')
+			{
+				if(top>0) 
+				{
+					if(zhan[top-1].c=='(') top--;
+					else
+					{
+						x.c=')';
+						x.site=i;
+						zhan[top++]=x;
+					}
+				}
+				else
+				{
+					x.c=')';
+					x.site=i;
+					zhan[top++]=x;
+				}
+			}
+		}
+		cout<<sr<<endl;
+		int g=0;
+		for(int i=0;i<top;i++)
+		{
+			for(;g<zhan[i].site;g++) cout<<' ';
+			g++;
+			cout<<((zhan[i].c)=='('?'$':'?');
+		}
+		cout<<endl;
+	}
+	return 0;
+}