/*** author: yuji9511 ***/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> lpair;
const ll MOD = 1e9 + 7;
const ll INF = 1e18;
#define rep(i,m,n) for(ll i = (m); i < (n); i++)
#define rrep(i,m,n) for(ll i = (m); i >= (n); i--)
#define printa(x,n) for(ll i = 0; i < n; i++){ cout << (x[i]) << " \n"[i==n-1];};
void print() {}
template <class Head, class... Tail>
void print(Head&& head, Tail&&... tail){ cout << head << " \n"[sizeof...(tail) == 0]; print(forward<Tail>(tail)...);}

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	ll a1,b1,a2,b2,a3,b3;
	cin >> a1 >> b1 >> a2 >> b2 >> a3 >> b3;
	ll cnt = 0;
	if(a1 % 2 == 1) cnt++;
	if(a2 % 2 == 1) cnt++;
	if(a3 % 2 == 1) cnt++;
	if(cnt % 2 == 0){
		print(":-)");
	}else{
		print(":-(");
	}
}