#include <stdio.h>
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000000

bool is_kadomatsu(int a,int b,int c){
	if(a==b||b==c||c==a)return false;
	if(b>a&&b>c)return true;
	if(b<a&&b<c)return true;
	return false;
}

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