#define _USE_MATH_DEFINES

#include <iostream>		//cin, cout
#include <vector>		//vector
#include <algorithm>	//sort,min,max,count
#include <string>		//string,getline, to_string
#include <cstdlib>		//abs(int)
#include <utility>		//swap, pair
#include <deque>		//deque
#include <climits>		//INT_MAX
#include <bitset>		//bitset
#include <cmath>		//sqrt, ceil. M_PI, pow, sin
#include <ios>			//fixed
#include <iomanip>		//setprecision
#include <sstream>		//stringstream
#include <numeric>		//gcd, assumlate
#include <random>		//randam_device
#include <limits>		//numeric_limits

using namespace std;
constexpr long long int D_MOD = 1000000007;


int main() {

    int n1 = 0, n2 = 0, n3 = 0;
    int A, B;

    cin >> A >> B;
    if (A % 2 == 1 || B == 0) {
        n1 = 1;
    }

    cin >> A >> B;
    if (A % 2 == 1 || B == 0) {
        n2 = 1;
    }

    cin >> A >> B;
    if (A % 2 == 1 || B == 0) {
        n3 = 1;
    }

    if ((n1 + n2 + n3) % 2 == 0) {
        cout << ":-)" << endl;
    }
    else {
        cout << ":-(" << endl;
    }

    return 0;

}