install homebrew
- brew install gcc
 
link homebrew installed gcc (g++-13) with mac gcc (By default mac gcc is clang)
- cd /opt/homebrew/bin
 - ln -s g++-13 g++
 
add bits/stdc++.h to mac
- cd /Library/Developer/CommandLineTools/usr/include
 - sudo mkdir bits
 
install homebrew
link homebrew installed gcc (g++-13) with mac gcc (By default mac gcc is clang)
add bits/stdc++.h to mac