[BOJ/C++]25305번_커트라인

https://www.acmicpc.net/problem/25305

 

##문제 풀기 전 내가 알고 있었어야 할 개념: 없음

#include <iostream>
#include <algorithm>
 
using namespace std;
 
int compare(const void* a, const void* b) {
    return (*(int*)b - *(int*)a);
}
 
int main() {
 
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
 
    int N,K;
    int* scores;
    cin >> N >> K;
 
    scores = new int[N];
 
    for (int i = 0; i < N; i++) {
        cin >> scores[i];
    }
 
    qsort(scores, N, sizeof(int), compare);
 
    cout << scores[K - 1] << '\n';
 
    delete[] scores;
 
    return 0;
}