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IKKO-Ohta/ABC02[C].py

Created June 30, 2017 14:11
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ABC02[C].py
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ABC02[C].py
import math
import numpy as np
nums = [int(x) for x in input().split()]
A = (nums[0],nums[1])
B = (nums[2],nums[3])
C = (nums[4],nums[5])
alpha = np.asarray([B[0] - A[0], B[1] - A[1]])
beta = np.asarray([C[0] - A[0], C[1] - A[1]])
S = 0.5 * math.sqrt(
np.linalg.norm(alpha) ** 2 * np.linalg.norm(beta) ** 2 - alpha.dot(beta) ** 2
)
print(S)
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