### thekushalghosh's blog

By thekushalghosh, history, 3 months ago, ,

Hello Codeforces community,

A few months ago, I had noticed a fact and had written a blog on how the Double division operator should be used for floor division instead of math.floor() in Python. This is because the single division operator behaves abnormally for very large numbers in Python, and thus math.floor() on them would work incorrectly.

Link to my blog.

Today in Codeforces Educational Round #86 Question C, I first submitted a solution in which I used the Single Division Operator in floor division and got WA. But then I realised the large constraints which could cause an error here, so on changing the single division operator to Double Division Operator, I got AC.

My WA Solution

My AC Solution

This is the first time my blog has helped me in a Codeforces contest, so I thought of sharing this with the community.

PS: Please visit the blog to know the insight I am talking about.

• +18

By thekushalghosh, history, 8 months ago, ,

Hello Codeforces Community,

Actually all of the Python users over here would agree that "sometimes" we need to write a bit long for taking input in Python, and it is also slow.

That's why I made a good template for taking Quick And Fast Input, which I would like to share.

import sys

############ ---- Input Functions ---- ############
def inp():
return(int(input()))
def inlt():
return(list(map(int,input().split())))
def insr():
s = input()
return(list(s[:len(s) - 1]))
def invr():
return(map(int,input().split()))


Just paste this template at the beginning of your Code.

It comprises of 4 functions :-

1) inp — For taking integer inputs.

2) inlt — For taking List inputs.

3) insr — For taking string inputs. Actually it returns a List of Characters, instead of a string, which is easier to use in Python, because in Python, Strings are Immutable.

4) invr — For taking space seperated integer variable inputs.

The input = sys.stdin.readline is actually for Faster Inputs, because line reading through System STDIN (Standard Input) is faster in Python.

• +26

By thekushalghosh, history, 13 months ago, ,

Hey Codeforces Community. This is to remind everyone that we have the Facebook Hackercup 2019 Round 1 this weekend from 29th June 10:00 AM (PDT) to 30th June 10:00 AM (PDT). Click here to see when this event starts in your time zone.

Best of luck to everyone. Thank You.