（三）多次殴打、伤害他人或者一次殴打、伤害多人的。
merge(arr, left, mid, right); // 合并两部分
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The Baked Good Quadrant: The items here are only breakfasts by convention. Any of them could be served at other meals, and often are.
公式： f(x)=x⋅Φ(x)≈0.5x(1+tanh[2/π(x+0.044715x3)])
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