from Polynomial import Polynomial
import re
n = int(input('How much polynomials: '))
P = []
for i in range(n):
p = Polynomial()
p.input()
P.append(p)
exp = input('Enter your expression: ').replace(' ', '')
exp = re.split('(\W+)',
exp) # честно, просто загуглил, но хочу сам позже разобраться
for i in range(len(exp)):
if len(exp[i]) == 2:
exp[i] = P[int(exp[i][1]) - 1]
while '*' in exp:
i = exp.index('*')
exp = exp[:i - 1] + [exp[i - 1] * exp[i + 1]] + exp[i + 2:]
while '+' in exp:
i = exp.index('+')
exp = exp[:i - 1] + [exp[i - 1] + exp[i + 1]] + exp[i + 2:]
while '-' in exp:
i = exp.index('-')
exp = exp[:i - 1] + [exp[i - 1] - exp[i + 1]] + exp[i + 2:]
exp[0].display()
