import java.util.*;

public class Main {
	public static void main(String[] args) {

		int o,p,q;
		
		Scanner sc  = new Scanner(System.in);
		int[] test  = new int[100000];
		int[] test2 = new int[100000];
	 // String str = sc.next();
	    
	  int	s = Integer.parseInt(sc.next());
		int	t = Integer.parseInt(sc.next());
		int	u = Integer.parseInt(sc.next());
		
		int h = 0 ;

		if( u / 25  > 0 ) 
		  {
			  t  = 	t + ( u / 25 );
				u  =  u % 25;
		  }
		if( t /4 > 0 )
		  {
			  s  = 	s + ( t / 4 );
				t  =  t % 4;					
		  }
		if( s /10 > 0 )
		  {
			  h  = 	h + ( h / 10 );
				s  =  s % 10;					
		  }		
		
	    	System.out.println(  s+t+u+h  );	
		
		
   /*

		while(true){
		
 
        test  [d] = s ;
        test2 [d] = t ;
     	
     	d++;
		}

     */
    	System.out.println();
	}
}