import java.util.*;
class No32{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		int m[] = {1000, 100, 25, 1};
		int L = m[1]*(sc.nextInt());
		int M = m[2]*(sc.nextInt());
		int N = m[3]*(sc.nextInt());
		int sum = L + M + N;
		int coin = 0;
		for (int i=0; i<=3; i++){
			if (i > 0 ){
				coin = coin + (sum/m[i]);
			}
			sum = (sum - m[i]*(sum/m[i]));
		}
		System.out.println(coin);
	}
}