#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,avx,avx2")
#include <bits/stdc++.h>
#define MEM 1111111
#define sanic ios_base::sync_with_stdio(0)
#define x first
#define y second
#define pf push_front
#define pb push_back
#define all(v) v.begin(), v.end()
#define sz size()
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pi;
const ll INF = 1e17+7;
const ll MOD = 998244353;
ll gcd(ll a, ll b){
if(a%b) return gcd(b, a%b);
return b;
}
ll t,n,m,a,b,x;
ll ls(vector<ll> l){
ll ret=0;
vector<int> lis;
lis.pb(0);
for(int i=0; i<n; i++){
if(lis.back()<l[i])
lis.pb(l[i]);
else{
int idx=lower_bound(lis.begin(), lis.end(), l[i])-lis.begin();
lis[idx] = l[i];
}
}
ret = lis.sz-1;
return ret;
}
signed main(){
sanic; cin.tie(0);
cin >> n >> x;
vector<ll> d;
for(int i=0; i<n; i++){
ll q;
cin >> q;
d.pb(q);
}
ll ans=ls(d);
if(!x){
cout << ans;
return 0;
}
for(int k=-x; k<=x; k++)
for(int i=0; i<n; i++){
for(int j=i+1; j<n; j++){
vector<ll> g;
g = d;
for(int l=i; l<=j; l++)
g[l] += k;
ans = ls(g);
}
}
cout << ans;
}
