#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define ll long long
#define OO 2'000'000'000
#define ull unsigned long long
#define nl '\n'
#define sz(x) (ll)(x.size())
#define all(x) x.begin(),x.end()
#define rall(s)  s.rbegin(), s.rend()
#define getline(s) getline(cin>>ws,s)
#define ceill(n, m) (((n) / (m)) + ((n) % (m) ? 1 : 0))
#define pi  3.141592653589793
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define multi_ordered_set tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>


void Fast_IO(){
ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
// freopen("filename.in", "r", stdin);
// freopen("filename.txt", "w", stdout);
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
#endif
}




int dx[] = { 2, 1, -1, -2, -2, -1, 1, 2 };
int dy[] = { 1, 2, 2, 1, -1, -2, -2, -1 };

ll MaxSubarray(vector<ll> &a, vector<ll>&b,ll l,ll r){
    // kadane's algorithm
    ll maxi = 0, sum = 0,n=sz(a);
    for(int i=0;i<n;i++){
        if(i>=l and i<=r) sum+=b[i];
        else sum+=a[i];
        maxi = max(maxi,sum);
        if(sum<0) sum=0;
    }
    return maxi;
}



void solve(){
   ll n, x;
    cin >> n >> x;
    vector<ll> a(n),b(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        b[i] = a[i]/x;
    }

    bool neg = false;

    ll ans = MaxSubarray(a,b,0,n-1);

    ll cnt = 0, pos=-1;

    for(int i=0;i<n;i++){
        if(neg and a[i]<0) cnt++;
        else if(a[i]<0){
            neg = true;
            pos = i;
            cnt++;
        }else{
            if(neg){
                ll tmp = MaxSubarray(a,b,pos,i-1);
                ans = max(ans,tmp);
                neg = false;
            }
        }
    }

    if(neg){
        ll tmp = MaxSubarray(a,b,pos,n-1);
        ans = max(ans,tmp);
    }

    cout << ans << nl;




}

int main(){
    Fast_IO();
int t =1;
//cin>>t;
while(t--){
solve();
}
return 0;
}