时间限制: 2s
内存限制: 192MB 提交: 70617 解决: 42235
题目描述
求以下三数的和,保留2位小数
1~a之和
1~b的平方和
1~c的倒数和
输出格式
1+2+...+a + 1^2+2^2+...+b^2 + 1/1+1/2+...+1/c
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