| using namespace std; | |
| int main() { | |
| ios::sync_with_stdio(false); | |
| cin.tie(nullptr); | |
| int n; | |
| long long k; | |
| if (!(cin >> n >> k)) return 0; | |
| vector<long long> a; | |
| a.reserve(1LL * n * n); | |
| long long x; | |
| for (long long i = 0; i < 1LL * n * n; ++i) { | |
| cin >> x; | |
| a.push_back(x); | |
| } | |
| if (k < 1 || k > (long long)a.size()) return 0; | |
| nth_element(a.begin(), a.begin() + (k - 1), a.end()); | |
| cout << a[k - 1]; | |
| return 0; | |
| } |