 (,,,,, = 1) 
	 = ("");
	.("",);
	.("",);
	.("",);
	.("",);
	.("",);
	.("",);
	
	(".",);
	 () = 0 
		 = ;
		 1
	
		 0
	;
 // ()

//   () 
 (,=0,=0,="",=" ",="") 
	//*****       
	//***** :  
	//***** :   (0  , -1  , ..    )
	//***** :  ()  (0 -  )
	//***** :    (  ,    )
	//***** :   
	//***** 0    
	//***** 1  
	//*****
	 ,;
	 ,,;
	 ;
	 ;
	 ,;
	 , ;
	
	 =0 
		=.();
	;
	 =0 
		=.();
	;
	=?(=-1,1,0);
	.(,,,,);
	 ()=1 
		=;
	;
	=1;
	 =1 
		 () = 1 
			=?(=1,(),.(,));
			 = 1
		
			 = 0
		;
		 (,5)="" 
			=();
			.();
			.(0);
			=.(,"");
			 =1 
				=.();
			;
		 (,4)="" 
			=();
			.();
			.(0);
			=.(,"");
			 =1 
				=.();
			;
		 (,5)=""  //  
			 = ?(=1,(),.);
			(".", );
			 () = 0 
				. = ;
				 = (., "");
				 = 1
			
		
			=(,,,,,)
		;
		=0;
	;
	 =1 
		 =1 
			.();
			=.();
			.();
		;
		.(,,);
	;
	();
 //