#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;

bool check(const string& S){
  if(S.size() >= 10) return false;
  string kado = "kadomatsu";
  int pos = 0;
  rep(i,S.size()){
    while(pos < kado.size() && S[i] != kado[pos]) pos++;
    if(pos == kado.size()) return false;
  }
  return true;
}

int main(){
  string S;
  cin >> S;

  if(check(S)) cout << "Yes" << endl;
  else cout << "No" << endl;
  
  return 0;
}