这里

TLE Code:

#include<bits/stdc++.h>
using namespace std;
int gcd(int x,int y)
{
    if(y==0)return x;
    return gcd(y,x%y);
}
int main()
{
    freopen("orac.in","r",stdin);
    freopen("orac.out","w",stdout);
    int n,a[100005],lcm,gcd1;
    scanf("%d",&n);
    for(int i=0;i<n;i++)scanf("%d",&a[i]);
    for(int i=0;i<n;i++)
        for(int j=i+1;j<n;j++)
        {
            lcm=a[i]/gcd(a[i],a[j])*a[j];
            if(i==0&&j==1)gcd1=lcm;
            else gcd1=gcd(gcd1,lcm);
        }
    printf("%d",gcd1);
}

我好菜qwq