#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) cin >> a[i];
  int cnt = 0;
  int b[n];
  for (int i = 0; i < n; i++) {
    if (a[i] % 2 == 0)
      b[i] = a[i] / 2;
    else {
      if (cnt % 2 == 0) {
        b[i] = (a[i] - 1) / 2;
        cnt++;
      } else {
        b[i] = (a[i] + 1) / 2;
        cnt++;
      }
    }
  }
  for (int i = 0; i < n; i++) cout << b[i] << endl;
}
