 50, ;
//*****************************************
//*****************************************
 ()
	=",,";
	 (1)<>"" 
	    =+",1";
	;
	 (2)<>"" 
	    =+",2";
	;
	 (3)<>"" 
	    =+",3";
	;
	 =1 
	    =+",,,";
	;
	 .()=1  
	    =+",";
	;
	 (, );

//*****************************************
 (,,,,1,2,3="",1="",2="",3="")
	//(":  "++"  "++" , = "+("[(,""12.2= "")]")
	//+("  : [1     ]//[2     ]//[3     ]")+("  : [1     ]//[2     ]//[3     ]"));
	 =0  
		//(" = 0. .");   
		;
	;
	.();
	. = "50";
	. = ;
	.. = ;
	..(1,1);
	..(2,2);
	..(3,3);
	 ()=0 
		.. = ;
		..(1,1);
		..(2,2);
		..(3,3);
	;
	. = ;
	. = ;

//*********************************************
 (,,1,2="")
	.();
	.(..);
	 2="" 
		 = .(,,,1);
	    
		 = .(,,,1, 2);
	;
	 =.. 
		.(..);
		 2="" 
			 =  + .(,,,1);
		    
			 =  + .(,,,1, 2);
		;
	;
     ;

//*****************************************
 () 
	 ;
     ()=0 
	    ("   -   !");
		;
	;
	50 = ("50.01");
	6401 = ("64.01");
	6402 = ("64.02");
	6405 = ("64.05");
	6406 = ("64.06");
	7612 = ("76.12");
	6827 = ("68.27");
	6802 = ("68.02");
	// = (""); //  
	=..; 
	=..;
	=..;
	 = ("");
	 = ()+" "+();


	=("");
	();
	 .()=0  
		.();
		 .() = 1 
			. = ;
		;
	;
	.(",","");  
	62 = 0;
	.();
	 .() = 1 
		 ..(("62"))=1 
			=(.,"",1,2); 
			=+;
			//   
			(":"+,50,.,(,.),
			,.,"",1,2,3);
			//    -  
			62 = 62 + (,.);
			 ( < .)  //  , .. . > 
				("  "+.+"  ("+.+")   ("++"),    .");
				 = .-; 
				 = ":"+;
				 _=0 
					 = ..()/(100+..());
					 = ?(.=,,0);
					 = (*,2);
					 =  - ;
					 = ..()/(100+..());
					 = (*,2); 
					//  
					(,50,6401,,,.,"",
					1,2,);
					//    
					("   ",6402,6802,,1,2,,
					, );
					//    
					// = 
					("  ",6405,6827,,1,2,,
					, );
				
					(,50,6406,,,.,"",
					1,2);
				; 
			; 
		 (..(("64"))=1)  //  , .. . > 
			 = .;
			 = ":"+;
			 _=0 
				 = ..()/(100+..());
				 = ?(.=,,0);
				 = (*,2);
				 =  - ;
				 = ..()/(100+..());
				 = (*,2); 
				//  
				(,50,6401,,,.,"",
				1,2,);
				//    
				("   ",6402,6802,,1,2,,
				, );
				//    
				("  ",6405,6827,,1,2,,
				,);
			
				(,50,6406,,,.,"",
				1,2);
			; 
			
		
			 = ":"+;
			(,50,.,.,,.,"",
			1,2,3);
		;
	; 
	//     
	 (.,2)="62" 
		 = (*62/,2,1);
		(" ",7612,6827,,
		1,2,"",,);  
	;
	

	.();


//*****************************************
//*****************************************
