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

#define rep(i, a, n) for(int i=(a); i<(n); ++i)
#define per(i, a, n) for(int i=(a); i>(n); --i)
#define pb emplace_back
#define mp make_pair
#define clr(a, b) memset(a, b, sizeof(a))
#define all(x) (x).begin(),(x).end()
#define lowbit(x) (x & -x)
#define fi first
#define se second
#define lson o<<1
#define rson o<<1|1
#define gmid l[o]+r[o]>>1

using LL = long long;
using ULL = unsigned long long;
using pii = pair<int,int>;
using PLL = pair<LL, LL>;
using UI = unsigned int;

const int mod = 1e9 + 7;
const int inf = 0x3f3f3f3f;
const double EPS = 1e-8;
const double PI = acos(-1.0);

char s[20] = "kadomatsu";
char t[20];

int main(){
	scanf("%s", t);
	int n = strlen(s);
	int m = strlen(t);
	int j = 0;
	rep(i, 0, m){
		while(j < n && s[j] != t[i])	++j;
		if(j == n){
			puts("No");
			return 0;
		}
		++j;
	}
	puts(j == n ? "Yes" : "No");
	return 0;
}