#include <bits/stdc++.h>
using namespace std;

#define all(x) begin(x), end(x)
#ifdef CKISEKI
#define safe cerr << __PRETTY_FUNCTION__ << " line " << __LINE__ << " safe\n"
#define debug(a...) debug_(#a, a)
#define orange(a...) orange_(#a, a)
void debug_(auto s, auto ...a) {
  cerr << "\e[1;32m(" << s << ") = (";
  int f = 0;
  (..., (cerr << (f++ ? ", " : "") << a));
  cerr << ")\e[0m\n";
}
#include <experimental/iterator>
void orange_(auto s, auto L, auto R) {
  cerr << "\e[1;33m[ " << s << " ] = [ ";
  using namespace experimental;
  copy(L, R, make_ostream_joiner(cerr, ", "));
  cerr << " ]\e[0m\n";
}
#else
#define safe ((void)0)
#define orange(...) safe
#define debug(...) safe
#endif

int main() {
  cin.tie(nullptr) -> sync_with_stdio(false);
  int n;
  cin >> n;

  vector<int64_t> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }

  bool flag = false;
  for (int i = 0; i < n; i++) {
    if (a[i] > 0) {
      cout << '+';
    } else if (a[i] < 0) {
      cout << '-';
    } else if (a[i] == 0) {
      if (flag) {
        cout << '+';
      } else {
        cout << '0';
      }
    }

    if (a[i] % 2 != 0) {
      a[i] -= 1;
      flag = true;
    }
    if (i + 1 < n) a[i + 1] += a[i] / 2;
  }
  cout << '\n';

  return 0;
}