#938. 谜之阶乘（factorial）
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ID: 938
Type: Default
1000ms
256MiB
Tried: 22
Accepted: 6
Difficulty: 8
Uploaded By:
zhouyou
谜之阶乘（factorial）
【输入样例 1】
3
1
6
120
【输出样例 1】
-1
2
3 1
6 5
3
5 1
6 3
120 119
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