k 值可解释为e[i ]= 2e[i-2 ]-e[i-1] 发生的天数。(即d[i]=-2d[i-1] 出现的次数)。可能具体发生在哪天就很难判断了。
k 值可解释为e[i ]= 2e[i-2 ]-e[i-1] 发生的天数。(即d[i]=-2d[i-1] 出现的次数)。可能具体发生在哪天就很难判断了。
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