import java.util.*;
import java.lang.*;
import java.io.*;

class Main
{
	public static void main (String[] args) 
	{
		// 入力値の読み込み
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		
		int total =0;
		int d =0;
		int e =0;
		
		d = a/25;
		total += a%25;
		
		e = (b+d)/4;
		total += (b+d)%4;
		
		total += (c+e)%10;
		
		System.out.println(total);
	}
}