#include <iostream>
using namespace std;

int main() {
  int A1, B1, A2, B2, A3, B3;
  cin >> A1 >> B1 >> A2 >> B2 >> A3 >> B3;
  int t1 = A1, t2 = A2, t3 = A3;
  for (int i = 0; i < B1; ++i)
    t1 = t1 * A1 % 2;
  for (int i = 0; i < B2; ++i)
    t2 = t2 * A2 % 2;
  for (int i = 0; i < B3; ++i)
    t3 = t3 * A3 % 2;
  if ((t1 + t2 + t3) % 2 == 0)
    cout << ":-)" << endl;
  else
    cout << ":-(" << endl;
}