#include<iostream>
#include<cmath>
#include<string>
using namespace std;
int as(string w)
{
	int i,flag=0;
	string k=w;

	for(i=0;i<w.length();i++)
          k[i]=w[w.length()-1-i];

if(k!=w)
return 0;
else return 1;

}
int ts(int n,string a,string b,string &kkk,int &flag2)
{

	string t,hh;
	int flag=0,i,q;
	for(i=0;i<=n;i++)
	{
		   if(i==n)
		   {
				t=a.substr(0,i);//cout<<'sfds';
			for(q=i-1;q>=0;q--)
				t[i-1-q]=a[q];
			t[i-1-q]='\0';
	         hh=b+t;
			 if(as(hh)==0)
			 {kkk=t;//cout<<kkk<<endl;
			 }
			 else 	
			  flag2=1;
			 return 0;
		   }
		                                                                
		   flag=0 ;
	
			hh=a.substr(i);
			//cout<<hh<<endl;
			if(as(hh)==0)
				flag=1;
	
		//	cout<<flag<<endl;
		
	      if(flag==0)
		  {
			  
			  if(i==0&&as(b)==0)
			  {kkk="";break;}
			  else if(i==0&&as(b))
			  { flag2=1;continue;}
		     
				 t=a.substr(0,i);
             
			for(q=i-1;q>=0;q--)
				t[i-1-q]=a[q];
			t[i-1-q]='\0';
			//
			
		  
              hh=b+t;//cout<<hh.length()<<endl;//printf("%s\n",&hh[0]);//cout<<hh<<endl;
			  if(as(hh)==1)
			  {;}
			  else 
			  {kkk=t;return 0;}
			 
		 }   	
	}
		return 1;
}		
int main()
{
	
string a,sl,b,c,c2;
//d="sf";sl=d+d;,d="abababa"cout<<sl.length()<<endl;
char s[2000],w[2000];
//if(as(d)==1)


	int n;//a="sers";cout<<as(a);
	while(gets(s))
	{	
	       gets(w);

		a=s,b=w;n=a.length();
	//	if(as(a)&&as(b))
	//	{printf("\n");continue;}
		if(a.length()==0&&b.length()==0)
		{
		
			printf("No Solution.\n");continue;
		}
		else if(a.length()==0&&b.length()!=0)
	         if(as(b))
			 {
				 printf("No Solution.\n");continue;
     
			 }
			 else 
			 {printf("\n");continue;}
		else if(a.length()!=0&&b.length()==0)
			if(as(a))
			{
				 printf("No Solution.\n");continue;
     
			 }
			else  {printf("\n");continue;}
int fla=0,fla2=0;
			 ts(n,a,b,c,fla);
	 
     ts(n,b,a,c2,fla2);
	
///printf("%s\n",&c[0]);
	 if(fla==1&&fla2==1)
         	 printf("No Solution.\n");
	 else if(fla==1&&fla2==0)
		 printf("%s\n",&c2[0]);
	 else if(fla==0&&fla2==1)
printf("%s\n",&c[0]);
	 else 
		 if(c.length()<c2.length())
           printf("%s\n",&c[0]);
		 else if(c.length()>c2.length())
                 printf("%s\n",&c2[0]);
		 else if(c<=c2)
             printf("%s\n",&c[0]);
		 else 
      printf("%s\n",&c2[0]);

	}
	return 0;
}			

• Re:好郁闷，老wa,大虾帮忙看一下，或用数据测一测，感激不尽，，， (2751) xemoaya 2005-09-21 09:18:55
• 你这个数据就挂了： (54) xemoaya 2005-09-21 09:20:07
• 貌似你什么数据都是no solution,我都无语了 (2751) xemoaya 2005-09-21 09:25:28