#include <algorithm>
#include <iostream>
using namespace std;

int main() {
  int n;
  int a = 0;
  cin >> n;
  int flower_array[n];
  for (int i = 0; i < n; i++) {
    cin >> flower_array[i];
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n - i; j++) {
      double average = 0;
      for (int k = 0; k <= j; k++) {
        average += flower_array[i+k];
      }
      average /= (j+1);
      for (int k = 0; k <= j; k++) {
          if (flower_array[i+k] == average) {
              a++;
              break;
          }
      }
    }
  }
  //a -= n;
  cout << a;
  return 0;
}