> #include <stdio.h>         
> #include<iostream.h>         
> int main()         
> {         
>     char a[150]={0},c;         
>     int b[150]={0};                 
>     int i,j,n=0,m=0,k,r,t;         
>     for(i=0;a[i]!='\0';i++)         
>         n++;         
>     k=1;
> 	while(1)   
>     {   
>         c=getchar();   
>         if(c==10)break;   
>         a[i]=c,i++;        
>     }   
>     for(i=0;a[i]!='\0';i++)      
>         n++;      
>     k=1;   
>     for(i=0;i<=n;i++)   
>     {   
>         if(a[i]==' ')b[i]=1;   
>     }
>     while(k<=n)         
>     { 
> 		for(t=0;t<n;t++)
> 		{
>         for(i=0,j=k+i;i<=n;)         
>         {         
>             while(b[i]!=0)i++;    
>             j=i+k;         
>             while(b[j]!=0)j++;         
>             if(a[i]=='('&&a[j]==')')         
>             {         
>         
>                 b[i]=1;         
>                 b[j]=1;         
>                 if(k>=2)         
>                 {         
>                     for(r=i+1;r<j;r++)         
>                         if(b[r]!=1)b[r]=2;         
>                 }         
>                 i++;
> 				j++;    
>             }         
>             else if(a[i]=='['&&a[j]==']')         
>             {         
>                 b[i]=1;         
>                 b[j]=1;         
>                 if(k>=2)         
>                 {         
>                     for(r=i+1;r<j;r++)         
>                     {   
>                         if(b[r]!=1)b[r]=2;   
>                     }   
>                 }         
>                 i++;
> 				j++;    
>             }         
>             else i++;         
>         }
> 		}
>         k++;         
>     }         
>     for(i=0;a[i]!='\0';i++)         
>     {         
>         if(b[i]==1)printf("%c",a[i]);         
>         if(b[i]!=1)         
>         {         
>             if(a[i]=='(')printf("()");         
>             if(a[i]==')')printf("()");         
>             if(a[i]=='[')printf("[]");         
>             if(a[i]==']')printf("[]"); 
> 			m++;
>         }         
>     }
> 	cout<<m;
> 	if(a[i]==0)cout<<' ';
>     return 0;         
> }