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using namespace std; typedef long long ll; int main() { ll n, k; cin >> n >> k; ll niza[n]; for(int i = 0; i < n; i++) { cin >> niza[i]; } ll L = 0, R = 1e18; ll res = 1e18; while(L <= R) { ll middle = (L + R) / 2; ll kolku_zadaci = 0; for(int i = 0; i < n; i++) { kolku_zadaci += middle / niza[i]; } if(kolku_zadaci >= k) { res = min(res, middle); R = middle - 1; } else { L = middle + 1; } } cout << res << endl; return 0; }
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