import java.util.Scanner;

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 O =0;
        do{

            if((L/25)>0){
                M=M+1;
                L=L-1;
            }
            if((M/4)>0){
                N=N+1;
                M=M-1;
            }
            if((N/10)>0){
                O=O+1;
                N=N-1;
            }
            System.out.println(L+M+N+O);
        }while((N/10)>0);
                sc.close();
    }
}