Untitled

#include <bits/stdc++.h>
using namespace std;
int main()
{
    //ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    string s1;
    cin>>s1;
    cin.ignore();
    transform(s1.begin(), s1.end(), s1.begin(), ::tolower);
    int l = s1.size();
    for (size_t i = 0; i < l; i++) {
        if(s1[i] == 'a' || s1[i] == 'e' || s1[i] == 'i' || s1[i] == 'o' || s1[i] == 'u' || s1[i] == 'y')
        {
            s1.erase(i,1);
        }
        if(s1[i] != 'a' || s1[i] != 'e' || s1[i] != 'i' || s1[i] != 'o' || s1[i] != 'u' || s1[i] != 'y')
        {
            char tmp = s1[i];
            s1[i-1] = '.';
            s1[i] = tmp;
        }
    }
    cout << s1;

    return 0;
}