提交时间:2025-12-26 15:27:52

运行 ID: 78195

#include <iostream> #include <vector> #include <algorithm> int main() { int n, k; std::cin >> n >> k; std::vector<int> nums(n); for (int i = 0; i < n; ++i) { std::cin >> nums[i]; } std::nth_element(nums.begin(), nums.begin() + k - 1, nums.end(), std::greater<int>()); std::cout << nums[k - 1] << std::endl; return 0; }