func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     vector<int> p(n);     for (int i = 0; i < n; ++i) {       cin >> p[i];     }     vector<int> f(n + 1, 0);     for (int& x : p) {       f[x] = f[x - 1] + 1;     }     cout << n - *max_element(f.begin(), f.end());   }   