import java.util.*;





import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws Exception {
        
     Scanner s = new Scanner(System.in);
     
      int L = s.nextInt();
        int M = s.nextInt();
        int N =s.nextInt();
        
        int K = 0;
        int S = 0;
        int R = 0;
        
        if(N>24){
            K=N/25;
            N=N%25;
            M=M+K;
             }
        
        if(M>3){
            S=M/4;
            M=M%4;
            L=L+S;
        }
        
        if(L>9){
            R=L/10;
            L=L%10;
            }
        
        int sum =L+M+N;
        
        System.out.println(sum);
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
    }
}