#include <iostream>
#include <string>
using namespace std;

int main() {
	string s = "kadomatsu";
	string t; cin >> t;
	
	int j = 0;
	for (int i = 0; i < s.length(); i++) {
		if (s[i] == t[j]) {
			j++;
			if (j == t.length()) break;
		}
	}
	if (j == t.length()) cout << "Yes" << endl;
	else cout << "No" << endl;
	
	return 0;
}