#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, n) for (int i = a; i < n; i++)      //iをaからn
#define per(i, n, a) for (int i = a - 1; i >= n; i--) //iをnからa
#define db(x) cout << #x << " = " << x << endl
#define db2(x, y) cout << "(" << #x << ", " << #y << ") = (" << x << ", " << y << ")\n"; //デバッグ用
#define all(x) (x).begin(), (x).end()
//sort(all(a)); ソート
//sort(all(a),greater<int>()); 逆順ソート
int main()
{
    string s;
    cin>>s;
    string kado="kadomatsu";
    
    int snum=0,knum=0;
    
    while(true){
    if(s.at(snum)==kado.at(knum)){
    snum++;
    knum++;
    }else{
    knum++;
    }
    
    if(snum==s.size()){
        cout<<"Yes";
        return 0;
    }else if(knum==kado.size()){
        cout<<"No";
        return 0;
    }
    }
    
return 0;
}