#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    string S; cin >> S; S += '?';
    string T = "kadomatsu";
    int i = 0;
    for(char c : T) if(S[i] == c) i++;
    cout << (S[i] == '?' ? "Yes" : "No") << endl;
}