#include #include #include #include //#include using namespace std; typedef long long ll; const ll MOD = 1e9 + 7; int main() { ios_base::sync_with_stdio(false); int n; cin >> n; vector v(n); for(int i = 0; i < n; i++) { cin >> v[i]; } vector left(n, -1), right(n, n); stack st; for(int i = 0; i < n; i++) { while(!st.empty() and v[st.top()] > v[i]) { st.pop(); } if(!st.empty()) { left[i] = st.top(); } st.push(i); } stack st2; for(int i = n - 1; i >= 0; i--) { while(!st2.empty() and v[st2.top()] > v[i]) { st2.pop(); } if(!st2.empty()) { right[i] = st2.top(); } st2.push(i); } ll total_subarrays = (ll)n * (ll) (n + 1) / 2LL; total_subarrays %= MOD; ll bad_subarrays = 0; for(int i = 0; i < n; i++) { ll L = i - left[i], R = right[i] - i; bad_subarrays += (L * R) % MOD; bad_subarrays %= MOD; } cout << (total_subarrays - bad_subarrays + MOD) % MOD << endl; return 0; }