#19353. 阶乘数列之和
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ID: 19353
Type: Default
1000ms
128MiB
Tried: 0
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阶乘数列之和
说明
输入一个正整数n.求1+1/2!+1/3!+....+1/n!
* 输出保留4位小数
输入格式
正整数n
输出格式
数列之和
21.5000