fast io 1

fast io

#include 
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    return 0;
}

Here is what the above code is Doing:
1. It is including the header file bits/stdc++.h. This header file includes all the header files that are required for C++.
2. It is using namespace std. This means that all the names defined in the standard C++ library will be accessible without the std:: prefix.
3. It is defining the main function.
4. It is using the ios_base::sync_with_stdio(false) function. This function makes the execution faster by synchronizing the C and C++ standard streams.
5. It is using the cin.tie(NULL) function. This function flushes the output every time it is used.
6. It is returning 0 from the main function.

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