func_code_string: #include <bits/stdc++.h>   using namespace std;   void in() {}   int main() {     in();     int n;     cin >> n;     int arr[n + 10], ps[n + 10];     for (int i = 0; i < n; ++i) {       scanf( %d , arr + i);       ps[arr[i]] = i + 1;     }     ps[0] = ps[n + 1] = -1;     int a = 0, pre = 1;     for (int i = 1; i <= n + 1; ++i) {       if (ps[i - 1] < ps[i]) continue;       a = max(a, i - pre);       pre = i;     }     cout << (n - a) << endl;     return 0;   }   