#include using namespace std; using ll = long long; #define rep(i, n) for (int i = 0; i < (n); i++) #define repr(i, n) for (int i = (n) - 1; i >= 0; i--) #define range(a) a.begin(), a.end() list L[100000], R[100000]; int par[100000]; int find(int x) { if (par[x] == x) return x; return par[x] = find(par[x]); } void unite(int x, int y) { x = find(x); y = find(y); while (not L[x].empty() and not L[y].empty() and L[x].back() < L[y].front()) L[x].pop_back(); while (not R[x].empty() and not R[y].empty() and R[x].back() > R[y].front()) R[y].pop_front(); L[x].splice(L[x].end(), move(L[y])); R[x].splice(R[x].end(), move(R[y])); par[y] = x; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int N; cin >> N; vector A(N); rep(i, N) cin >> A[i], A[i]--; vector ord(N); rep(i, N) ord[i] = i; sort(range(ord), [&](int i, int j) { return A[i] > A[j]; }); rep(i, N) { L[i].push_back(A[i]); R[i].push_back(A[i]); par[i] = i; } ll ans = 0; for (int i : ord) { if (i - 1 >= 0 and A[i - 1] > A[i]) { ans += L[find(i - 1)].size(); unite(i - 1, i); } if (i + 1 < N and A[i] < A[i + 1]) { ans += R[find(i + 1)].size(); unite(i, i + 1); } } cout << ans << endl; }