#include #include #include #include #include #include #include #include #include #include using namespace std; struct aaa{aaa(){cin.tie(nullptr); ios::sync_with_stdio(false); cout<ostream &operator<<(ostream &o,const vector&v){o<<"{";for(int i=0;i<(int)v.size();i++)o<<(i>0?", ":"")<> a1 >> b1 >> a2 >> b2 >> a3 >> b3; bool ans = true; if (a1%2 != 0) ans = false; if (a2%2 != 0) ans = false; if (a3%2 != 0) ans = false; cout << (ans? ":-)" : ":-(") << endl; }