import operator

math_functions = {
    '+': operator.add,
    '-': operator.sub,
    '*': operator.mul,
    '/': operator.truediv
}

#with open("output_dev_20k", "r") as f:
#    output = f.read().split('\n')
output = [
    '-190816',
    '261523620432',
    '583719',
    '0.9739',
    '719901',
]

#with open("tst2012.from", "r") as f:
#    from_data = f.read().split('\n')
from_data = [
    '219459 - 410275',
    '265572 * 984756',
    '584986 - 1267',
    '879174 / 902737',
    '520354 + 199547',
]



right = 0
total = 0

for n, _ in enumerate(output):
    try:

        num = from_data[n].split(' ')
        real_answer = math_functions[num[1]](int(num[0]), int(num[2]))
        if num[1] == '/':
            real_answer = round(real_answer, 4)
        predicted_answer = float(output[n])

        if predicted_answer == real_answer:
            right += 1
        total += 1
        print(real_answer, predicted_answer)
    except Exception as e:
        print(str(e))

print(right / total)