#include<bits/stdc++.h>
using namespace std;
#define fastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
typedef long long ll;
int main()
{
    int n;cin>>n;
    int arr[n];
    vector <int> v;
    for(int i=0;i<n;i++)cin>>arr[i];
    for(int i=0;i<n;i++)
    {
        int temp=arr[i];
        if(temp>=0)v.push_back(temp);
        else
        {
            while(!v.empty()&&temp<0)
            {
                temp+=v.back();
                v.pop_back();
            }
            v.push_back(temp);
        }
    }
    while(v.back()==0&&v.size()>1)v.pop_back();
    for(auto item:v)cout<<item<<" ";
    cout<<endl;
}