![](https://i.imgur.com/0rHuq7N.png)\n\n**Example 1:**\n```\nInput: [1, 0, 0, 1, 0]\nOutput: 0\nExplanation:\nIf you answer 0 questions (k = 0) your_result = 0 and your friend_result = -1 (2 correct answers and 3 wrong answers).\n```\n\n**Example 2:**\n```\nInput: [1, 0, 0, 1, 1]\nOutput: 1\n```\n\n**Example 3:**\n```\nInput: [1, 1, 1, 0, 1]\nOutput: 2\n```

\n\nExample 1:\n\nInput: [1, 0, 0, 1, 0]\nOutput: 0\nExplanation:\nIf you answer 0 questions (k = 0) your_result = 0 and your friend_result = -1 (2 correct answ