#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() int main(){ char a[1500],m[6]="hello"; cin>>a; int n=0,b; b=strlen(a); for(int i=0;i!='\0';i++){ a[i]==m[n] n++ } if(b==n) cout<<"YES"; else cout<<"NO"; return 0; }