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
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define mid (l+r)/2
#define PI acos((ld)-1)
#define BOOST ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<vi> vvi;

int main(){
	BOOST;
	int n;
	ll ans = 0, mx;
	cin >> n;
	mx = n*2 + 1;
	vi t(n), pos(n + 1);
	for(int i=0; i<n; i++){
		cin >> t[i];
		pos[t[i]] = i;
	}
	for(int i=1; i<=n; i++){
		int a = pos[n-i/2], b = pos[n];
		if(a > b)
			swap(a, b);
		if(b-a+1 > i)
			continue;
		int be = max(0, b-i+1), en = min(n-1, a+i-1);
		ans += (en-be+1) - i + 1;
	}
	cout << mx << " " << ans;
}