LCM of Multiple Numbers using C++

#include <bits/stdc++.h>

using namespace std;

int gcd(int a, int b) {
    if (b == 0) {
        return a;
    }
    return gcd(b, a % b);
}

int main() {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int lcm = a[0];
    for (int i = 1; i < n; i++) {
        lcm = (a[i] * lcm) / gcd(a[i], lcm);
    }
    cout << "LCM = " << lcm << '\n';
    return 0;
}