import java.io.*;
import java.util.*;
import java.math.*;

class Main32 {
	
	public static void out (Object o) {
		System.out.println(o);
	}
	
	public static void main (String[] args) throws IOException {
		BufferedReader br = 
			new BufferedReader(new InputStreamReader(System.in));
		
		int l = Integer.parseInt(br.readLine()); // 100
		int m = Integer.parseInt(br.readLine()); //  25
		int n = Integer.parseInt(br.readLine()); //   1
		
		m += n / 25;
		n %= 25;
		l += m / 4;
		m %= 4;
		l %= 10;
		
		System.out.println(l + m + n);
	}
}