#include<bits/stdc++.h> using namespace std; int n,a[10005],dp[10005],ans,t; int main() { cin>>n; for(int i=1;i<=n;i++) { cin>>a[i]; dp[i]=1; t=0; for(int j=1;j<i;j++) if(a[j]<a[i]&&dp[j]>t) t=dp[j]; dp[i]+=t; if(ans<dp[i]) ans=dp[i]; } cout<<n-ans; return 0; }