import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class No32 {

	public static void main(String[] args) throws IOException{
		//貯金箱の憂鬱
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int L = Integer.parseInt(br.readLine()) , M = Integer.parseInt(br.readLine()) , N = Integer.parseInt(br.readLine());
		br.close();
		
		M += (int)(N / 25);
		L += (int)(M / 4);

		System.out.println((L % 10) + (M % 4) + (N % 25));
	}

}