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大家是怎么做的啊……我现在的方法Tle了用sqrt(a[0])的时间分解所有的因子，然后测试它。测试的时候用的是高精度除以单精度，就是把常数项移到等号右边然后除上x，然后一次项就变成了新的常数项，然后继续下去。看重数的方法是不断的求导，然后再试（我先把各级导数都保存了下来，然后二分尝试）…… Followed by:
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