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- #include <bits/stdc++.h>
- // tiom4eg's precompiler options
- // POGGERS POGGERS POGGERS POGGERS POGGERS POGGERS POGGERS
- // IO settings
- #define fastIO ios_base::sync_with_stdio(false); cin.tie(0)
- // Quick types
- #define ll long long
- #define ld long double
- #define ull unsigned long long
- #define pii pair <int, int>
- #define vi vector <int>
- #define mi vector <vector <int>>
- // Quick functions
- #define endl "\n"
- #define F first
- #define S second
- #define all(a) a.begin(), a.end()
- #define sz(a) (int)(a.size())
- #define pb push_back
- #define mp make_pair
- // Quick fors
- #define FOR(i, a, b) for (int i = a; i < b; ++i)
- #define FORS(i, a, b, c) for (int i = a; i < b; i += c)
- #define RFOR(i, a, b) for (int i = a; i >= b; --i)
- #define EACH(e, a) for (auto& e : a)
- // Pragmas
- #ifndef TIOM4EG
- #pragma GCC optimize("O3,unroll-loops") // let the chaos begin!
- #pragma GCC target("avx,avx2,bmi,bmi2,popcnt,lzcnt,tune=native")
- #pragma GCC comment(linker, "/stack:200000000")
- #endif
- // PBDS
- #include <ext/pb_ds/assoc_container.hpp>
- #include <ext/pb_ds/tree_policy.hpp>
- #define ordered_set tree <int, null_type, less <int>, rb_tree_tag, tree_order_statistics_node_update>
- #define ook order_of_key
- #define fbo find_by_order
- using namespace __gnu_pbds;
- // POGGERS POGGERS POGGERS POGGERS POGGERS POGGERS POGGERS
- using namespace std;
- mt19937 rng(chrono::duration_cast<chrono::milliseconds>(chrono::system_clock::now().time_since_epoch()).count());
- //#define int long long
- const int INF = 1e9 + 7, MD = 998244353, MAX = 1000001, R = 1 << 19, MOD1 = 1e9 + 7, MOD2 = 1e9 + 9, MOD12 = MOD1 * MOD1, MOD22 = MOD2 * MOD2, LG = 20, B1 = 103, B2 = 107, S = 10008;
- const ll INFLL = 1e18 + 7;
- vi d[MAX];
- signed main() {
- fastIO;
- int n; cin >> n;
- int a[n]; FOR(i, 0, n) cin >> a[i];
- FOR(i, 0, n) {
- for (int j = 1; j * j <= a[i]; ++j) if (a[i] % j == 0) {
- d[j].pb(a[i] / j);
- if (j * j < a[i]) d[a[i] / j].pb(j);
- }
- }
- FOR(i, 1, MAX) sort(all(d[i]));
- ll r = INFLL;
- FOR(i, 1, MAX) if (sz(d[i]) > 1) r = min(r, i * 1LL * d[i][0] * d[i][1]);
- cout << r;
- }
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