func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[100010], b[100010], ja[100010];   int main() {     int n;     cin >> n;     for (int i = 1; i <= n; i++) {       cin >> a[i];       ja[a[i]] = i;     }     for (int i = 2; i <= n; i++) {       if (ja[i] > ja[i - 1])         b[i] = 1;       else         b[i] = 0;     }     int ad = 0;     for (int i = 1; i <= n; i++) {       int j = i;       while (b[j] == 1) j++;       ad = max(ad, j - i + 1);       i = j;     }     cout << n - ad << endl;   }   