Пример #1
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 def test_triangle_1(self):
     assert triangle(4) == 14
Пример #2
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 def test_triangle_1(self):
     assert triangle(7) == 429
Пример #3
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 def test_triangle_1(self):
     assert triangle(20) == 6564120420
Пример #4
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 def test_triangle_1(self):
     assert triangle(6) == 132