pe006.py

#code created by NamanNimmo Gera
#2:32am, April 29, 2019.

''' 1 + 2 + 3 + 4 +.......n = n*(n+1)/2 
    1^2 + 2^2 + 3^2 + 4^2 +..... n^2 = n*(n+1)*(2n+1)/6
'''

print((((100*101)//2)**2) - ((100*101*201)//6))