#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define int long long
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<bool> vb;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<pll> vll;
typedef tree<pii,null_type,less<pii>,rb_tree_tag,
tree_order_statistics_node_update> oset;
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mid (l+r)/2
#define all(x) x.begin(),x.end()
#define FOR(i,a) for(int i=0;i<(a);i++)
#define FORE(i,a,b) for(int i=(a);i<(b);i++)
#define cont(x) for(auto el:x) cout<<el<<' ';cout<<endl;
#define contp(x) for(auto el:x) cout<<el.fi<<'-'<<el.se<<' ';cout<<endl;
#define sp <<" "<<
#define DEBUG(x) cout<<(#x) sp x<<endl
#define carp(a,b) (((a%MOD)*(b%MOD))%MOD)
#define topla(a,b) (((a%MOD)+(b%MOD))%MOD)
const ll INF=1e18;
const int MAXN=1e6+5;
const int MAXK=30;
const int MOD=1e9+7;
int tut[MAXN];
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int n,x;
cin>>n>>x;
vi a(n+1);
FORE(i,1,n+1) cin>>a[i];
int ans;
//pref
oset pref;
FORE(i,1,n+1){
if(pref.empty()){
pref.insert({a[i],i});
tut[i]=1;
}
else{
auto it=pref.upper_bound({a[i],0});
tut[i]=pref.order_of_key(*it)+1;
if(it!=pref.end()){
pref.erase(*it);
}
pref.insert({a[i],i});
}
}
ans=pref.size();
//suf
FORE(i,1,n+1) a[i]*=-1;
//cont(a);
oset suf;
for(int i=n;i>0;i--){
if(suf.empty()){
suf.insert({a[i],i});
}
else{
auto it=suf.upper_bound({a[i],0});
if(it!=suf.end()){
suf.erase(*it);
}
suf.insert({a[i],i});
}
ans=max(ans,tut[i]+(int) suf.size()-1);
}
cout<<ans<<endl;
}
