#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ios ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define endl '\n'

const int N = 2e5+5;

ll a[N];

void solve(){
	ll n;
	cin>>n;
	for(int i=1;i<=n;i++) cin>>a[i];
	ll ans = 0;
	ll sum = 0, ys = 0;
	for(int i=1;i<=n;i++){
		if(ans==-1){
			if(sum%2==-1) ys = 1;
			if(a[i]<=0){
				sum = sum/2+a[i];
				ans = -1;
			} 
			else{
				if(ys){
					if(a[i]+sum/2>=1){
						sum = a[i]+sum/2;
						ans = 1;
					}
					else{
						sum = a[i]+sum/2;
						ans = -1;
					}
				}
				else{
					if(a[i]+sum/2>0) ans = 1;
					else if(a[i]+sum/2==0) ans = 0;
					else ans = -1;
					sum = sum/2+a[i];
				}
			}
		}
		else if(ans == 0){
			if(a[i]>0){
				sum = sum/2+a[i];
				ans = 1;
			}
			else if(a[i]==0){
				sum = sum/2+a[i];
				ans = 0;
			}
			else{
				sum = sum/2+a[i];
				ans = -1;
			}
		}
		else if(ans == 1){
			if(sum%2==1) ys = 1;
			if(a[i]>=0){
				sum = sum/2+a[i];
				ans = 1;
			} 
			else{
				if(ys){
					if(a[i]+sum/2<=-1){
						sum = a[i]+sum/2;
						ans = -1;
					}
					else{
						sum = a[i]+sum/2;
						ans = 1;
					}
				}
				else{
					if(a[i]+sum/2>0) ans = 1;
					else if(a[i]+sum/2==0) ans = 0;
					else ans = -1;
					sum = sum/2+a[i];
				}
			}
		}
		if(ans == 1) cout<<'+';
		else if(ans == -1) cout<<'-';
		else cout<<0;
		//cout<<sum<<' '<<ys<<endl;
	}
}

int main(){
	ios;
	//ll T;cin>>T;while(T--)
	solve();
	return 0;
}