#include using namespace std; typedef long long ll; typedef pair pii; #define pb push_back #define mp make_pair #define rep(i,n) for(int i=0;i<(n);++i) int main(){ cin.tie(0); ios::sync_with_stdio(false); string s;cin >> s; int n=s.size(); string t="treeone",u="forest",ans=""; rep(i,n){ if(i