beginner template for competitive programming

beginner_template.cpp

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

int main()
{
    // uncomment if you want to use cin cout for input output ( don't mix with scanf, printf ).
    // ios_base::sync_with_stdio(false);
    // cin.tie(NULL);
    // cout << fixed << setprecision(2);
  
    // cout << "\n";
  
    return 0;
}

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

#define ll long long
#define ull unsigned long long
#define PI acos(-1)
#define endl '\n'

void FIO()
{
ios_base::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}

int main()
{
FIO();
int t;
cin >> t;
while (t--)
{

}
return 0;

}