Submission #1322766

#TimeUsernameProblemLanguageResultExecution timeMemory
1322766bw_isamuMountains (NOI20_mountains)C++20
0 / 100
2095 ms1592 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define rep(i, n) for (int i = 0; i < (int)(n); i++) int main() { // Fast I/O ios_base::sync_with_stdio(false); cin.tie(NULL); int n; cin >> n; // input vector<int> a(n); for(int i = 0; i < n; i++){ cin >> a[i]; } int total = 0; for(int i = 1; i < n - 1; i++){ int right = 0; int left = 0; for(int j = i + 1; j < n; j++){ if(a[i] > a[j]){ right++; } } for(int k = i - 1; k >= 0; k--){ if(a[i] > a[k]){ left++; } } int ans = right * left; total += ans; } cout << total << endl; return 0; }
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