import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		//System.out.println("100円硬貨の枚数");
		int L = scanner.nextInt();
		//System.out.println("25円硬貨の枚数");
		int M = scanner.nextInt();
		//System.out.println("1円硬貨の枚数");
		int N = scanner.nextInt();
		scanner.close();
		int a = 100;
		int b = 25;
		int c = 1000;
		int sum = L*a+M*b+N; //貯金箱の金額
		int k = 0;			 //お札の枚数
		int l, m, n = 0;
		k = sum / c;
		int coin_sum = 0;	 //硬貨の金額の合計
		coin_sum = sum - k*c;
		l = coin_sum / a;
		coin_sum = coin_sum - a*l;
		m = coin_sum / b;
		coin_sum = coin_sum - b*m;
		n = coin_sum;
		int num_coin = l + m + n;
		System.out.println(num_coin);
	}
}