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#include <iostream>
#include <fstream>
#include <string>
using namespace std;
ifstream f("euro2.in");
ofstream g("euro2.out");
int n,i,j,l1[10005], l2[10005], lmax, pmax, maxim;
double v[10005], maxx;
int main()
{ f>>n;
for(i=1;i<=n;i++)
f>>v[i];
for(i=1;i<=n;i++)
{ lmax=0;
for(j=1;j<=i-1;j++)
if(lmax<l1[j] && v[i]>v[j])
lmax=l1[j];
l1[i]=lmax+1;
}
for(i=n;i>=1;i--)
{ lmax=0;
for(j=n;j>=i+1;j--)
if(lmax<l2[j] && v[i]>v[j])
lmax=l2[j];
l2[i]=lmax+1;
}
for(i=1;i<=n;i++)
if (l1[i]>=2 && l2[i]>=2)
maxim=max(l1[i]+l2[i]-1,maxim);
g<<maxim;
return 0;
}