import java.util.Scanner;

class no32{
	public static void main(String[] args) {
		Scanner stdIn=new Scanner(System.in);
		int l=stdIn.nextInt();
		int m=stdIn.nextInt();
		int n=stdIn.nextInt();
		int o=0;
		int x;
		if(n>=25) {
			x=n/25;
			m+=x;
			n=n%25;
		}
		if(m>=4) {
			x=m/4;
			l+=x;
			m=m%4;
		}
		if(l>=10) {
			x=l/10;
			o+=x;
			l=l%10;
		}
		System.out.println(l+m+n);
	}
}