poj3002

简单题

#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
using namespace std;

int n;

long long gcd(long long x, long long y)
{
    if (!x || !y)
        return x > y ? x : y;
    for (long long t; t = x % y; x = y, y = t);
    return y;
}

void input()
{
    long long ans = 1;
    scanf("%d", &n);
    for (int i = 0; i < n; i++)
    {
        int a;
        scanf("%d", &a);
        ans = ans * a / gcd(ans, a);
    }
    if (ans <= 1000000000)
        printf("%lld\n", ans);
    else
        printf("More than a billion.\n");
}

int main()
{
    //freopen("t.txt", "r", stdin);
    int t;
    scanf("%d", &t);
    while (t--)
    {
        input();
    }
    return 0;
}