#include <bits/stdc++.h>
#define rep(i,a,b) for (int (i)=(a);(i)<(b);++(i))
#define sz(x) (x).size()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
const int INF = 1e9;
const ll LINF = 1LL<<60;
const ll MOD = 1e9+7;

int A[3],B[3];

int main() {
  rep(i,0,3) cin >>A[i]>>B[i];
  int a = 0;
  rep(i,0,3) {
    if (A[i]%2 == 1) ++a;
  }
  if (a == 1 || a == 3) cout << ":-(" << '\n';
  else cout << ":-)" << '\n';
  return 0;
}