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

#define lli long long int
#define REP(i,s,n) for(lli i=s;i<n;i++)
#define NUM 2520
#define INF (1LL<<28)
#define DEBUG 0
#define mp(a,b) make_pair(a,b)
#define SORT(V) sort(V.begin(),V.end())
#define PI (3.141592653589794)
#define MOD (1000000007)
#define TO_STRING(VariableName) # VariableName
#define LOG(xx) if(DEBUG)cout<<TO_STRING(xx)<<"="<<xx<<" "<<endl;
#define LOG2(xx,yy) if(DEBUG)cout<<TO_STRING(xx)<<"="<<xx<<" "<<TO_STRING(yy)<<"="<<yy<<endl;
#define LOG3(xx,yy,z) if(DEBUG)cout<<TO_STRING(xx)<<"="<<xx<<" "<<TO_STRING(yy)<<"="<<yy<<" "<<TO_STRING(z)<<"="<<z<<endl;
#define LOG4(w,xx,yy,z) if(DEBUG)cout<<TO_STRING(w)<<"="<<w<<" "<<TO_STRING(xx)<<"="<<xx<<" "<<TO_STRING(yy)<<"="<<yy<<" "<<TO_STRING(z)<<"="<<z<<endl;

template<class T>bool chmax(T & a, const T & b) { if (a < b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; }


int main(){
    string t = "kadomatsu";
    map<char,lli> cnt;
    map<char,lli> border;

    string s;
    cin>>s;

    REP(i,0,t.size()){
        border[t[i]]++;
    }

    REP(i,0,s.size()){
        cnt[s[i]]++;
    }

    REP(i,0,26){
        if(border['a'+i] < cnt['a'+i]){
            cout<<"No"<<endl;
            return 0;
        }
    }
    cout<<"Yes"<<endl;




    return 0;
}