#include <bits/stdc++.h>
using namespace std;
using Int = long long;
constexpr static int mod = 1e9 + 7;
constexpr static int inf = (1 << 30) - 1;
constexpr static Int infll = (1LL << 61) - 1;
int Competitive_Programming =
    (ios_base::sync_with_stdio(false), cin.tie(nullptr),
     cout << fixed << setprecision(15), 0);
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
template <typename A, typename B>
string to_string(pair<A, B> p);
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p);
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p);
string to_string(const string &s) { return '"' + s + '"'; }
string to_string(const char *s) { return to_string((string)s); }
string to_string(bool b) { return (b ? "true" : "false"); }
string to_string(vector<bool> v) {
  bool first = true;
  string res = "{";
  for (int i = 0; i < static_cast<int>(v.size()); i++) {
    if (!first) {
      res += ", ";
    }
    first = false;
    res += to_string(v[i]);
  }
  res += "}";
  return res;
}
template <size_t N>
string to_string(bitset<N> v) {
  string res = "";
  for (size_t i = 0; i < N; i++) {
    res += static_cast<char>('0' + v[i]);
  }
  return res;
}
template <typename A>
string to_string(A v) {
  bool first = true;
  string res = "{";
  for (const auto &x : v) {
    if (!first) {
      res += ", ";
    }
    first = false;
    res += to_string(x);
  }
  res += "}";
  return res;
}
template <typename A, typename B>
string to_string(pair<A, B> p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p) {
  return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " +
         to_string(get<2>(p)) + ")";
}
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p) {
  return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " +
         to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")";
}
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
  cerr << " " << to_string(H);
  debug_out(T...);
}
int func(string &s) {
  int ret = 0, ctr = 0, mi = inf;
  for (int i = 0; i < s.size(); i++) {
    if (s[i] == '(')
      ctr++;
    else
      ctr--;
    mi = min(ctr, mi);
  }
  ctr = 0;
  for (int i = 0; i < s.size(); i++) {
    if (s[i] == '(')
      ctr++;
    else
      ctr--;
    if (ctr == mi) ret++;
  }
  return ret;
}
int main() {
  int N;
  cin >> N;
  string s;
  cin >> s;
  int op = 0, ed = 0;
  for (int i = 0; i < N; i++) {
    if (s[i] == '(')
      op++;
    else
      ed++;
  }
  if (op != ed) {
    cout << 0 << "\n";
    cout << 1 << " " << 1 << "\n";
    return 0;
  }
  int ans = 0, l = 1, r = 1;
  for (int i = 0; i < N; i++) {
    for (int j = i + 1; j < N; j++) {
      swap(s[i], s[j]);
      int cnt = func(s);
      if (cnt > ans) {
        ans = cnt, l = i + 1, r = j + 1;
      }
      swap(s[i], s[j]);
    }
  }
  cout << ans << "\n";
  cout << l << " " << r << "\n";
}
