题解 | #小易的升级之路#

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) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int n = in.nextInt();
            int a = in.nextInt();
            int[] b = new int[n+1];
            for(int i = 1; i <= n; i++) {
                b[i] = in.nextInt();
            }
            int c = a;
            for(int i = 1; i <= n; i++) {
                if(c >= b[i]) {
                    c += b[i];
                } else {
                    c += gcd(b[i],c);
                }
            }
            System.out.println(c);
        }
    }
    public static int gcd(int a, int b) {
        if(b == 0) {
            return a;
        }
        return gcd(b,a%b);
    }
}