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直接取模是不对的 首先取模算法都是模一个偶数，设为2n，那么构造数据2n+1 0 1 0 0 0，显然是可分的，但是取模算法会得到不可分的结果，虽然也能ac
建议改用 if(a[i]>6) a[i]=a[i]%6+6
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