import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        /*
         * 有七种不同颜色的彩虹糖 第i种有ai个 每一位小朋友都想吃到全部七种颜色的彩虹糖 最多可以分给多少个小朋友*/
        Scanner scanner = new Scanner(System.in);
        int red = scanner.nextInt();
        int orange = scanner.nextInt();
        int yellow = scanner.nextInt();
        int green = scanner.nextInt();
        int indigo= scanner.nextInt();
        int blue = scanner.nextInt();
        int purple = scanner.nextInt();
        int childNumber=0;
        while (true){
            if (red>=1&&orange>=1&&yellow>=1&&green>=1&&indigo>=1&&blue>=1&&purple>=1){
                red--;
                orange--;
                yellow--;
                green--;
                indigo--;
                blue--;
                purple--;
                childNumber++;
            }else {
                break;
            }
        }
        System.out.println(childNumber);
    }
}