#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define endl '\n'
#define vec vector<ll>
#define mat vector<vector<ll> >
#define fi first
#define se second
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll> pll;
typedef long double ld;
typedef complex<double> Complex;
const ll INF=1e9+7;
const ll inf=INF*INF;
const ll mod=998244353;
const ll MAX=100010;




signed main(){
    string s;cin>>s;
    ll n=s.size();
    ll j=0;
    string t="kadomatsu";
    bool f=1;
    rep(i,n){
        while(j<9&&t[j]!=s[i]){
            j++;
        }
        if(j==9)f=0;
    }
    cout<<(f?"Yes":"No")<<endl;
}