문제 링크 : boj.kr/2090난이도 : S4태그 : 수학, 정수론코드#include #define all(x) (x).begin(), (x).end()#define INF 0x7FFFFFFFusing namespace std;using ll = long long;using ld = long double;using pii = pair;using pll = pair;ll gcd(ll a, ll b){ if (!b) return a; return gcd(b, a % b);}int main(){ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n; cin >> n; vector arr(n); ll mult = 1; ..