#include <iostream>
using namespace std;

class stringProcessor
{
    public:
    static string removeVowels(string str);
    for (int i=0;i<str.length();i++)
    {
        if(!(str[i]>='a'&&str[i]<='z')||
            (str[i]>='A'&&str[i]<='Z')||
            str[i]==' ')
            return "Invalid input";
    }
}
sting result = "";
for (int i=0,i<str.length();i++)
{
    char ch=str[i];
    if (!(ch =='a'|| ch == 'e'||ch == 'i'||
          ch =='o'|| ch == 'u'|| 
          ch =='A'|| ch == 'E'||ch == 'I'||
          ch =='O'|| ch == 'U'||))
          {
              result+= ch;
             
          }
}
return result;