There are N consecutive natural numbers from 1 to N. The sum of the even numbers in these numbers is 90 and the sum of the odd numbers is 100. find N.
100 90 [OP_SUB] 2 [OP_MUL] 1 [OP_SUB]
var_a = 100
var_b = 90
var_c = var_a - var_b
var_d = 2
var_e = var_c * var_d
var_f = 1
var_g = var_e - var_f
print(int(var_g))