练24.2 循环求和
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说明
利用for、while循环。计算输出的和。
输入格式
输入。对于100%的数据，。
输出格式
如题述，之和。
样例
1055
You cannot submit for this problem because the contest is ended. You can click "Open in Problem Set" to view this problem in normal mode.
利用for、while循环。计算输出的和。
输入。对于100%的数据，。
如题述，之和。
1055