| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1287919 | lucian | Mountains (NOI20_mountains) | C++20 | 2094 ms | 2624 KiB |
#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
int n;
cin >> n;
int a[n + 5];
for(int i = 1; i <= n; i++){
cin >> a[i];
}
int total = 0;
for(int i = 2; i <= n - 1; i++){
int l = 0, r = 0;
for(int j = 1; j <= i - 1; j++){
if(a[i] > a[j]){
l++;
}
}
for(int j = i + 1; j <= n; j++){
if(a[i] > a[j]){
r++;
}
}
total += r * l;
}
cout << total;
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