import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int L = sc.nextInt();
    int M = sc.nextInt();
    int N = sc.nextInt();
    int ans = 0;
    ans += (N % 25);
    M += (N / 25);
    ans += (M % 4);
    L += (M / 4);
    ans += (L % 10);
    System.out.println(ans);
  }
}