#include <iostream>
#include <cstring>
using namespace std;
 
void inverti(char v[], char ris[])
{
int len=strlen(v);
for(int i=0; i<len; i++)
{
ris[i]=v[len-i-1];
 
}
ris[len]='\0';
cout<<v<<endl;
cout<<ris<<endl;
}
void toglivocali(char v[], char ris[])
{
int len=strlen(v);
int j=0;
for(int i=0; i<len;i++)
{
if(v[i]=='a' || v[i]=='e' || v[i]=='i' || v[i]=='0' || v[i]=='u')
{
ris[j]=v[i];
j++;
}
}
ris[j]='\0';
cout<<ris<<endl;
}
 
 
int main() {
 
	char s1[256];
	char s2[256];
	char s3[256];
	cout<<"dammi stringa"<<endl;
	cin>>s1;
 
	inverti(s1,s2);
	toglivocali(s2,s3);
	cout<<"il risultato finale è:"<<s3<<endl;
	cout<<s2;
 
	return 0;
}