func_code_string: #include <bits/stdc++.h>   using namespace std;   long long lcis(long long a[], long long n) {     unordered_map<long long, long long> make_pair;     long long dp[n], lastIndex;     memset(dp, 0, sizeof(dp));     ;     long long mx = INT_MIN;     for (long long i = 0; i < n; i++) {       if (make_pair.find(a[i] - 1) != make_pair.end())         lastIndex = make_pair[a[i] - 1] - 1, dp[i] = 1 + dp[lastIndex];       else         dp[i] = 1;       make_pair[a[i]] = i + 1;       mx = max(mx, dp[i]);     }     return mx;   }   int main() {     long long n;     cin >> n;     long long arr[n];     for (long long i = 0; i < n; i++) cin >> arr[i];     long long li = lcis(arr, n);     cout << n - li << endl;   }   