#include<stdio.h>
int main()
{
    int n;  //一组中数的个数 
    int s[1000];
    int i;
    int x;  //用于存储一组数中的最大数 
    while (scanf("%d",&n)!=EOF)
    {
        x = 0;
        for (i = 0; i < n; i++)
        {
            scanf("%d",&s[i]);
            if (s[i]>x)
                x = s[i];
        }
        while(1)
        {
            for (i = 0; i < n; i++)
            {
                if (x%s[i]!=0)
                    break;
            }
            if(i >= n)
                break;
            x++;
        }
        printf("%d\n",x);
    }
    return 0;
}

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

MiA0IDYKMyAyIDUgNw==

2 4 6
3 2 5 7