Polygon area

import numpy as np

def PolyArea(x,y):
    return np.abs(np.dot(x,np.roll(y,1))-np.dot(y,np.roll(x,1)))


def main():
    n = int(input().strip())

    tx = []
    ty = []

    for _ in range(n):
        x, y = map(int, input().strip().split())
        tx.append(x)
        ty.append(y)
    
    print(PolyArea(tx, ty))


if __name__ == "__main__":
    main()

Test 1

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    im...

Test 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    im...

Test 3

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    im...