#pragma GCC optimize("Ofast") #include<bits/stdc++.h> using namespace::std; struct __INIT{__INIT(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);}} __init; #include <boost/multiprecision/cpp_dec_float.hpp> #include <boost/multiprecision/cpp_int.hpp> #include <boost/numeric/interval.hpp> #include <boost/numeric/interval/io.hpp> #include <boost/intrusive/rbtree.hpp> #include <boost/geometry.hpp> #include <boost/geometry/geometries/linestring.hpp> #include <boost/geometry/geometries/polygon.hpp> #include <boost/geometry/geometries/point_xy.hpp> #include<ext/pb_ds/assoc_container.hpp> #include<ext/pb_ds/tree_policy.hpp> #include<ext/pb_ds/tag_and_trait.hpp> using namespace __gnu_pbds; using namespace::std; namespace mp = boost::multiprecision; typedef mp::number<mp::cpp_dec_float<0>> cfloat; typedef mp::cpp_int cint; typedef long long lint; typedef long long ll; typedef long double ldouble; typedef vector<lint> vec; typedef vector<vector<lint>> mat; typedef vector<vector<vector<lint>>> mat3; typedef vector<double> dvec; typedef vector<vector<double>> dmat; typedef vector<vector<vector<double>>> dmat3; typedef vector<string> svec; typedef vector<vector<string>> smat; typedef vector<vector<vector<string>>> smat3; typedef vector<pair<lint,lint>> pvec; typedef vector<vector<pair<lint,lint>>> pmat; typedef vector<vector<vector<pair<lint,lint>>>> pmat3; #define rep(i, n) for(lint i = 0; i < (lint)(n); i++) #define irep(i) for(lint i = 0;; i++) #define irep1(i) for(lint i = 1;; i++) #define irep2(i) for(lint i = 2;; i++) #define rrep(i, n) for(lint i = (lint)(n-1); i >-1; i--) #define rrepi(i,a,b) for(lint i = (lint)(b-1); i >a-1; i--) #define repi(i,a,b) for(lint i=lint(a);i<lint(b);i++) #define rep2(i,a,b,c) for(lint i=lint(a);i>lint(b);i+=c) #define all(x) (x).begin(),(x).end() #define PI 3.141592653589793 #define dist(x1,y1,x2,y2) (pow(pow(x2-x1,2)+pow(y2-y1,2),0.5)) #define output(v) do{bool f=0;for(auto i:v){cout<<(f?" ":"");if(i>INF/2)cout<<"INF";else cout<<i;f=1;}cout<<"\n";}while(0) #define output2(v) for(auto j:v)output(j); #define _output(v) do{bool f=0;rep(i,v.size()){cout<<(f?" ":"");if(v[i]>INF/2)cout<<"INF";else cout<<v[i];f=1;}cout<<"\n";}while(0) #define _output2(v) rep(j,v.size()){_output(v[j]);} #define input(a,n) lint n;cin>>n;vector<lint>a(n);rep(i,n)cin>>a[i]; #define SUM(v) accumulate(all(v),0LL) #define INF (1LL<<60) #define IINF (1<<30) #define EPS (1e-10) #define LINF 9223372036854775807 #define MOD 1000000007 #define endl "\n" template<typename T=lint>T in(){return *istream_iterator<T>(cin);} inline lint gcd(lint a,lint b){return b?gcd(b,a%b):a;} inline lint lcm(lint a,lint b){return a*b/gcd(a,b);} inline bool chmin(auto& s,const auto& t){bool res=s>t;s=min(s,t);return res;} inline bool chmax(auto& s,const auto& t){bool res=s<t;s=max(s,t);return res;} vector<lint> dx={-1,1,0,0,1,1,-1,-1}; vector<lint> dy={0,0,-1,1,1,-1,1,-1}; int main(){ lint a,b,c,d,e,f; cin>>a>>b>>c>>d>>e>>f; if((a+c+e)%2)cout<<":-("<<endl; else cout<<":-)"<<endl; }