为什么会TLE?

Blind_Struggle @ 2023-07-24 13:26:21

#include <bits/stdc++.h>
using namespace std;
int a[5000005],k;
int main(){
    int n;
    cin>>n>>k;
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    sort(a,a+n);
    cout<<a[k];
}

by chen_z @ 2023-07-24 13:39:30

n<5000000，O(nlogn)，超了

by chen_z @ 2023-07-24 13:57:42

可以直接scanf+O2就过了

by Blind_Struggle @ 2023-07-27 23:19:33

@CSQLYB 谢谢大佬!!!