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#include <fstream>
using namespace std;
ifstream f("secv.in");
ofstream g("secv.out");
int d[5001],v[5001],i,j,maxd,n,nr,x;
int main()
{
f>>n;
for(i=1;i<=n;i++){
f>>v[i];
d[i]=1;
}
for(i=1;i<=n;i++)
for(j=i+1;j<=n;j++)
if(v[i]<v[j])
if(d[j]<d[i]+1){
d[j]=d[i]+1;
if(maxd<d[j]){
maxd=d[j];
x=j;
}
}
for(i=x;i>=1 && maxd>0;i--){
if(d[i]==maxd){
maxd--;
}
nr++;
}
g<<nr;
return 0;
}