cp_template.md

Fast I/O

from sys import stdin, stdout

if name == 'main':
first method : input_list = list(map(int, stdin.readline().strip().split())) or input_list = [x for x in stdin.readline().split()]
second method : int(stdin.readline().strip())

first method = stdout.write(var)  # always a string inside stdout    
second method = stdout.write(f"{var}\n")   
nested inputs list     
park = []   
for i in range(n):     
   park.append(list(map(int, stdin.readline().strip().split())))    

third method : lines = stdin.readlines() # for more efficient I/O, load all input at once, and then loop over it.

use lambda for short hand functions !

use in-built collections and itertools !