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);
}
}