// editor1
#include<iostream>
#include<algorithm>
#include<string>
using namespace std;
int main()
{
    string str="hello world";
    char vowel[5]={'a','e','i','o','u'};
    remove(vowel.begin(),vowel.end());
    if(vowel==str)
    {
        cout<<str<<endl;
    }
    else
    {
        cout<<"Invalid input";
    }
    
}