1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
#include <bits/stdc++.h>
using namespace std;

#define FOR(i, n) for (int i = 0; i < int(n); ++i)
#define FO(i, a, b) for (int i = (a); i < int(b); ++i)
#define OF(i, a, b) for (int i = (b)-1; i >= int(a); --i)

#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((b) < (a) ? (a) : (b))

#define REMIN(a, b) ((a) = min(a, b))
#define REMAX(a, b) ((a) = max(a, b))

#define ALL(c) (c).begin(), (c).end()

#define SQR(x) ((x) * (x))

//

int main() {
  ios_base::sync_with_stdio(0);

  int n;
  cin >> n;

  int where[n];
  FOR(i, n) {
    int x;
    cin >> x;
    where[x - 1] = i;
  }

  int mi = INT_MAX;
  int ma = -INT_MAX;

  long long result = 0;

  OF(x, 0, n) {
    auto i = where[x];
    REMIN(mi, i);
    REMAX(ma, i);

    FO(len, 2 * (n - x) - 2, 2 * (n - x)) {
      if (len < ma - mi + 1)
        continue;

      int a0 = max(0, ma - len + 1);
      int a1 = min(n - len, mi);

      //   cerr << "len " << len << " result:" << a1 - a0 + 1 << endl;

      result += max(0, a1 - a0 + 1);
    }
  }

  cout << 2 * n + 1 << " " << result << endl;

  return 0;
}