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

using ll = long long;
#define rep(i, n) for(int i = 0; i < n; i++)

int main() {
	string s;
	cin >> s;
	string t = "kadomatsu";
	int N = t.size(), M = s.size();
	int j = 0;
	rep(i, N) {
		if(t[i] == s[j]) j++;
		if(j == M) {
			cout << "Yes" << endl;
			return 0;
		}
	}
	cout << "No" << endl;
}