import java.util.Scanner;

public class Gomokunarabe {
	static Scanner scan = new Scanner(System.in);
	public static void main(String[] args) {
		int L =scan.nextInt()*100;
		int M =scan.nextInt()*25;
		int N =scan.nextInt();
		
		int Total = L+M+N;
		
		int Thousand = Total/1000;
		Total -= Thousand*1000;
		
		int Handred = Total/100;
		Total -=Handred*100;
		
		int TowentyFive = Total/25;
		Total -= TowentyFive*25;
		
		int one = Total;
		System.out.println(Handred+TowentyFive+one);
	}
}