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求平均数
Time Limit:1000MS  Memory Limit:32768K

Description:

求所有输入正整数的平均值。

Input:

输入一些正整数(每个正整数≤1000000,整数个数不大于1000).

Output:

输出平均数,保留2位小数.

Sample Input:

123 321 3 2 1 6 3

Sample Output:

65.57
Status  Submit


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