#pragma GCC optimize("O3") #include <bits/stdc++.h> #define ll long long #define str string #define pb push_back #define pf push_front #define in insert #define all(v) v.begin(),v.end() const int sz=1000000,INF=1000000000; using namespace std; void solve() { str s; cin>>s; for(int i=0;i<s.size()/2;i++) { cout<<s[i]; } cout<<" "; for(int i=s.size()/2;i<s.size();i++) { cout<<s[i]; } } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr),cout.tie(nullptr); ll t=1; //cin>>t; while(t--) { solve(); } }