THUA C++

#include <bits/stdc++.h>
using namespace std;

string s;
int t;

void xoa_trai()
{
    while(s[0]=='.') s.replace(0,1,"");
}

void xoa_phai()
{
    while(s[s.length()-1]=='.') 
        s.replace(s.length()-1,1,"");
}

void xoa_giua()
{
    int n = s.length();
    for(int i=n-1;i>0;i--)
    {
        if((s[i]=='.')&&(s[i-1]=='.')) 
            s.replace(i,1,"");
    }
}

void giai()
{   
    getline(cin,s);
    xoa_trai();
    xoa_phai();
    xoa_giua();
    cout << s << endl;
}


int main()
{
    freopen("thua.inp","r",stdin);
    freopen("thua.out","w",stdout);
    cin >> t;
    getline(cin,s);    //doc tam de nhay xuong hang
    for(int i=0;i<t;i++)
        giai();
}