#include <bits/stdc++.h> // #include <atcoder/maxflow> #define int long long using namespace std; // using namespace atcoder; using vec_int = vector<int>; using ll = long long; #define rep(i, n) for(int i = 0; i < (int)(n); i++) void cout_line(vector<int> &a){ for(int i=0;i<a.size();i++){ if(i<a.size()-1){ cout<<a.at(i)<<" "; }else{ cout<<a.at(i)<<endl; } } } signed main() { string S; cin>>S; string S2 = "kyoprotenkei90"; if(S.size()!=S2.size()){ cout<<"No"<<endl; return 0; } map<char, int> map1; map<char, int> map2; for(int i=0;i<S.size();i++){ map1[S.at(i)]++; map2[S2.at(i)]++; } for(auto temp: map1){ if(!map2.count(temp.first)){ cout<<"No"<<endl; return 0; } if(map2[temp.first]!=temp.second){ cout<<"No"<<endl; return 0; } } cout<<"Yes"<<endl; return 0; }