hdu 火车入队 stack

#include <stdio.h>
#include <iostream>
#include <stack>
#include <string>
#include <string.h>
using namespace std;
int main()
{
	int n;
	//string in,out;
	char in[1000],out[1000];
	while(cin>>n>>in>>out)
	{
		//stack<char> s;
		char s[1000];
		memset(s,‘\0‘,sizeof(s) );
		int mark[20];
		int i=0,j=0;
		int count=0;
		while(i<n)
		{
			//if(s.empty() )
			if(strlen(s)==0)
			{
				//s.push(in[i]);
				s[count++]=in[i];
				mark[i+j]=0;
				i++;
			}
			//if(!s.empty() && s.top()!=out[j] )
			if(strlen(s)!=0 && s[strlen(s)]!=out[j] )
			{
				//s.push(in[i]);
				s[count++]=in[i];
				mark[i+j]=0;
				i++;
			}
			//while(!s.empty() &&s.top() ==out[j] )
			while(strlen(s)!=0 && s[strlen(s)-1]==out[j] )
			{
				//s.pop();
				s[strlen(s)-1]=‘\0‘;
				mark[i+j]=1;
				j++;
			}
		}
		//if( s.empty() )
		if(strlen(s)==0 )
		{
			cout<<"Yes."<<endl;
			for(int i=0;i<2*n;i++)
			{
				if(mark[i]==0)
					cout<<"in"<<endl;
				else
					cout<<"out"<<endl;
			}
			cout<<"FINISH"<<endl;
		}
		else
			cout<<"No."<<endl<<"FINISH"<<endl;
	}
	return 0;
}

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