C++ :

#include <cmath>
#include <cstdio>
#include <iostream>
#include <vector>
using namespace std;

void add_tri(double x1, double y1, double x2, double y2,
             double* tot_ar, double* wx) {
  double ar = x1*y2 - x2*y1;
  *tot_ar += ar;
  *wx += ar * (x1+x2)/3.0;
}

typedef vector<int> VI;

main() {
  int n;
  cin >> n;
  VI x(n), y(n);
  for (int i = 0; i < n; i++) cin >> x[i] >> y[i];
  x.push_back(x[0]); y.push_back(y[0]);
  double tar = 0.0, tx = 0.0, bar = 0.0, bx = 0.0;
  for (int i = 0; i < n; i++) {
    if (y[i] >= 0 && y[i+1] >= 0) {
      add_tri(x[i], y[i], x[i+1], y[i+1], &tar, &tx);
    } else if (y[i] <= 0 && y[i+1] <= 0) {
      add_tri(x[i], y[i], x[i+1], y[i+1], &bar, &bx);
    } else {
      double mx = y[i]*(double)(x[i+1]-x[i])/(y[i]-y[i+1]) + x[i];
      add_tri(x[i], y[i], mx, 0.0, y[i] > 0 ? &tar : &bar,
                                   y[i] > 0 ? &tx : &bx);
      add_tri(mx, 0.0, x[i+1], y[i+1], y[i+1] > 0 ? &tar : &bar,
                                       y[i+1] > 0 ? &tx : &bx);
    }
  }
  tx /= tar; bx /= bar;
  if (fabs(tx-bx) < 1e-6) {
    printf("Balanced.\n");
  } else if (tx < bx) {
    printf("CE is aft of CLR by %.02lf units.\n", bx-tx);
  } else {
    printf("CE is forward of CLR by %.02lf units.\n", tx-bx);
  }
}