#include<iostream>
#include<algorithm>
#include<vector>
#include<string>
#include<utility>
#include<map>
#include<set>
#include<queue>
#include<stack>
#include<functional>
#include<math.h>
#include<random>
#include <bitset>
using namespace std;
#define N (1000000000+7)
//#define N 998244353
#define INF 1e16
typedef long long ll;
typedef pair<int,int> P;
typedef pair<int,P> Q;
 
const int inf = (int)1e9; 
 
ll gcd(ll a, ll b) {
	if (b > a) {
		ll tmp = b;
		b = a;
		a = tmp;
	}
	if (a%b == 0)return b;
	else return gcd(b, a%b);
}




int main(void){
	int a1,b1,a2,b2,a3,b3;
	cin>>a1>>b1>>a2>>b2>>a3>>b3;
	int ans = 0;
	if(b1==0)ans++;
	if(b1>0&&a1%2==1)ans++;
	if(b2==0)ans++;
	if(b2>0&&a2%2==1)ans++;
	if(b3==0)ans++;
	if(b3>0&&a3%2==1)ans++;
	if(ans%2==0)cout<<":-)"<<endl;
	else cout<<":-("<<endl;
	return 0;
}