제출 #585877

#제출 시각아이디문제언어결과실행 시간메모리
585877kkkkkkkkMountains (NOI20_mountains)C++14
0 / 100
2079 ms1964 KiB

#include <iostream>

using namespace std;

int main()
{
    int n,vk=0;
    cin >> n;
    int a[n];
    for (int i=0;i<n;i++)
        cin >> a[i];
    for (int i=0;i<n;i++)
    {
        int l=0,r=0;
        for (int j=0;j<n;j++)
        {
            if (j==i)
                continue;
            if (j<i&&a[j]<a[i])
                l++;
            else if (j>i&&a[j]<a[i])
                r++;
        }
        vk+=l*r;
    }
    cout << vk << endl;

    return 0;
}
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