[click here to view the problem](https://codeforces.me/problemset/problem/1915/D)↵
↵
My code:
~~~~~↵
#include <bits/stdc++.h>↵
using namespace std;↵
int main()↵
{↵
int t;↵
cin>>t;↵
while(t--)↵
{↵
int n;↵
cin>>n;↵
string s;↵
cin>>s;↵
string a= "";//taking an empty string to store the output↵
int i= n-1;↵
while(i>= 0)//traversing the string from the rear↵
{↵
if(s[i] != 'a' && s[i] != 'e')//if its not a vowel, concatinating the last three elements to the "a" string↵
{↵
a= a+s[i];↵
a= a+s[i-1];↵
a= a+s[i-2];↵
a= a+'.';↵
i= i-3;↵
}↵
else//else, concatinating the last two elements to the "a" string↵
{↵
a= a+s[i];↵
a= a+s[i-1];↵
a= a+'.';↵
i= i-2;↵
}↵
}↵
a.pop_back();//popping out the last "."↵
reverse(a.begin(), a.end());//reversing the output since I traversed from the rear↵
cout<<a<<endl;↵
}↵
return 0;↵
}↵
~~~~~↵
↵
Hey CF!, I came up with a solution to the below mentioned question and my code is getting a tle. What could be the problem?↵
[click here to view the problem](https://codeforces.me/problemset/problem/1915/D)↵
↵
↵
please let me know what is wrong in this code, thanking you.
