#include <bits/stdc++.h>
using namespace std;
#define MOD (long long)(1e10 + 7)

long long power(long long a, long long n) {
  long long ans = 1;
  while (n > 0) {
    if (n & 1) ans = ans * a % MOD;
    a = a * a % MOD;
    n >>= 1;
  }

  return ans;
}

int main(void) {
  long long A[3], B[3];
  for (int i = 0; i < 3; i++) {
    cin >> A[i] >> B[i];
  }
  int even_or_odd = 0;
  for (int i = 0; i < 3; i++) {
    even_or_odd += power(A[i], B[i]) % 2;
  }
  cout << (even_or_odd % 2 == 0 ? ":-)" : ":-(") << endl;
  return 0;
}