Submission #1325169

#TimeUsernameProblemLanguageResultExecution timeMemory
1325169bw_isamuMountains (NOI20_mountains)C++20
0 / 100
2094 ms1592 KiB
#include <bits/stdc++.h> using namespace std; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); int n; cin >> n; vector<int> a(n); for (int i = 0; i < n; i++) { cin >> a[i]; } int ans = 0; for(int k = 1; k < n - 1; k++){ int left = 0; int right = 0; for(int j = 0; j < n; j++){ if(a[j] < a[k] && j < k){ left++; }else if(a[j] < a[k] && j > k){ right++; } } ans += left * right; } cout << ans << endl; return 0; }
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