func_code_string: #include <bits/stdc++.h>   using namespace std;   int cnt[100001];   int main() {     int n, k;     cin >> n;     int ans = 1;     int m = n;     while (n--) {       cin >> k;       cnt[k] = cnt[k - 1] + 1;       ans = max(ans, cnt[k]);     }     cout << m - ans;   }   