#line 1 "main.cpp"
#include <iostream>
#include <algorithm>
#include <vector>
#include <string>

using namespace std;

void solve() {
    string s;
    cin >> s;

    int i = 0;
    for (auto c : s) {
        while (i < 9 && c != "kadomatsu"[i]) ++i;
        if (i == 9) {
            cout << "No\n";
            return;
        }
        ++i;
    }
    cout << "Yes\n";
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    solve();

    return 0;
}