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1529: Sn的公式求和
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
Creator:
Submit:11
Solved:14
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Description
求Sn=a+aa+aaa+…+aa…aaa(有n个a)之值,其中a是一个数字,为2。 例如,n=5时=2+22+222+2222+22222,n由键盘输入。
Input
一个整数n, 0<=n<=9
Output
Sn的值
Sample Input
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5
Sample Output
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24690
Source/Category
等级考试一级
201912
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