#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <utility>
#include <algorithm>
#include <cmath>
#include <climits>
#include <iomanip>
#include <queue>
#include <stack>
#include <ctype.h>

using namespace std;

typedef long long ll;

const int INF = (1<<30)-1;
const ll LINF = 1e18;

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

template<class T> 
bool chmax(T &a, T b) {if (a < b) {a = b;return true;}else return false;}

template<class T> 
bool chmin(T &a, T b) {if (a > b) {a = b;return true;}else return false;}

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

//小数点精度
//cout << fixed << std::setprecision(15) << y << endl;