func_code_string: #include <iostream>   #include <vector>   #include <cstring>   #include <algorithm>   #include <cassert>   #include <deque>   #include <map>   #include <queue>   #include <climits>   #include <set>   #include <stack>   #include <cmath>   #include <array>   #include <unordered_map>   #include <unordered_set>      using namespace std;      #define ll long long   #define MAX 100000   #define MAX1 10000   #define MAX2 100000   #define inf 1000000000   #define eps 1e-12   #define MOD 1000000007      int main() {          ios_base::sync_with_stdio(0);       cin.tie(0);   #ifndef ONLINE_JUDGE       freopen( in.txt ,  r , stdin);       freopen( out.txt ,  w , stdout);   #endif          int t;       cin >> t;       while (t-- > 00) {           int n;           cin >> n;           int a[n + 5], i;           bool is = true;           for (i = 1; i <= n; ++i) {               cin >> a[i];               is &= a[i] == i;           }           if (is) {               cout << 0 <<   n ;               continue;           }           cout << (a[1] == 1 or a[n] == n ? 1 : (a[1] == n and a[n] == 1) ? 3 : 2) <<   n ;       }          return 0;   }