templates

Adding Debugging Header to your template

#include<bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include<algo/debug.h>
#endif

int main(){
    vector<int> a(10);
    iota(a.begin(), a.end(), 1LL);
    // for such clean code and dbg to work
    dbg(a);
    return 0;
}

Windows

1. Navigate to MinGW\include\c++\11.2.0\x86_64-w64-mingw32 or search stdc++.h .
2. Create a folder with name algo.
3. Paste the file debug.h into the folder.

Linux

1. Navigate to /usr/include/c++/9/algo or whatever version you are on.
2. Create a folder with name algo (with sudo permission).
3. Paste the file debug.h into the folder (with sudo permission).

Compiler Flags

Codeforces Blog : Compiler Flags

• -std=c++2a : for C++20
• -Wall : basic warnings
• -Wextra : basic warnings
• -Wshadow : warns if a declared name shadows the same name in some outer level
• -Wconversion : warns if data can be lost in an implicit conversion
• -fsanitize=address : this option inserts memory access checks into the program, such as checks for out-of-bounds accesses
• -fsanitize=undefined -fno-sanitize-recover : a similar option that catches undefined behavior, for example, a null pointer dereference
• -fstack-protector : stack protection
• -O2 : Optimization Flag

Setting-up IDE for new header

VS Code (Code Runner)

Add this to your settings.json

"code-runner.executorMap": {
    "cpp": "g++ -std=c++2a -DLOCAL $fullFileName -o $fileNameWithoutExt && ./$fileNameWithoutExt"
}

or

    "code-runner.executorMap": {
        "cpp": "g++ -std=c++2a -DLOCAL -Wall -Wextra -Wshadow -Wconversion -fsanitize=address -fsanitize=undefined -fno-sanitize-recover -fstack-protector -O2 $fullFileName -o $fileNameWithoutExt && ./$fileNameWithoutExt"
    }