Returns the sum of the number of columns.

Problem description

The sequence is defined as follows:
The first item of the series is N, and the subsequent items are the square root of the previous item, and the sum of the first m items of the series is obtained. There are multiple groups of input data. Each group occupies one row and consists of two integers n (n <10000) and M (M <1000). The meanings of N and m are as described above. Output outputs the sum of the input data in each group. Each test instance occupies one row and requires two decimal places in precision. Sample input81 42 2 Sample output94.733.41 code:

# Include <stdio. h>
# Include <math. h>
Int main ()
{
Double n, m, T;
Int I;
While (scanf ("% lf", & N, & M )! = EOF)
{
Double S = 0;
For (I = 0; I <m; I ++)
{
S = S + N;
T = SQRT (N );
N = T;
}
Printf ("%. 2lf \ n", S );
}
Return 0;
}