#include<bits/stdc++.h>
using namespace std;

int main(){
    string S,T;
    T = "kadomatsu";
    cin >> S;
    int s_index=0,t_index = 0;
    while(s_index < S.size() && t_index < T.size()){
        if(T[t_index] == S[s_index]){
            s_index++;
            t_index++;
        } else {
            t_index++;
        }
    }
    if(s_index >= S.size()){
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
}