 

     ,  . 
    ,     
  "".     
 ,      ,    
  ,   -  ,    - , 
      .   
  ,        
 ,       ,   . 
 ,    ,       
.    "" .

 .   INPUT.TXT     N 
(0<N<=100) -  .    , 
     (1- , 0-). 
    N ,   : 
1 - ; 2 - ; 3 - .

 .   OUTPUT.TXT   "" .

  INPUT.TXT	
7
0 1 0 0 0 1 1 
1 0 1 0 0 0 0 
0 1 0 0 1 1 0 
0 0 0 0 0 0 0 
0 0 1 0 0 1 0 
1 0 1 0 1 0 0 
1 0 0 0 0 0 0 

1 1 1 1 1 3 3	

  OUTPUT.TXT
4
