/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2021.01.29 21:33:00
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;

int main() {
    string s;cin >> s;
    string t = "kadomatsu";
    int p = 0;
    for (int i = 0; i < s.size(); i++) {
        while (t.size() > p && t[p] != s[i]) {
            p++;
        }
        
        if (p == t.size() && i != s.size()) {
            puts("No");
            return 0;
        }
    }
    puts("Yes");
    return 0;
}