/*No.32 貯金箱の憂鬱*/
import java.io.*;
public class No32 {
	public static void main(String[] args) {
		String h_maisuu[]=new String[3];
		int mai_1,mai_25,mai_100,mai_1000=0;
		try(BufferedReader input =new BufferedReader(new InputStreamReader(System.in))){
			mai_100=Integer.parseInt(input.readLine());
			mai_25=Integer.parseInt(input.readLine());
			mai_1=Integer.parseInt(input.readLine());
			mai_25+=mai_1/25;
			mai_1%=25;			
			mai_100+=25*mai_25/100;
			mai_25-=100/25*(25*mai_25/100);
			mai_1000+=100*mai_100/1000;
			mai_100-=1000/100*(100*mai_100/1000);
			System.out.println(mai_1+mai_25+mai_100);
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}