In some languages this does not submit correctly.

In Node.js, paste:

ws.write(result + "\n")

at the end of function main's for loop.

Cheers!

The Python template is missing the code to write the result to stdout. You can add the following lines to do so:

        fptr.write(str(result))
        fptr.write('\n')

This code efficiently calculates the number of ways Jim can buy candies, a common problem in computer science courses. I am getting assignment help from it.

The framework for C doesn't output any results. In main(), right underneath

    int result = solve(n, k);

add the following line:

    fprintf(fptr, "%d\n", result);

Python 3 solution:

return math.comb(n + k - 1, k) % 10 ** 9

Explanation:

See section Number of combinations with repetition here: https://en.wikipedia.org/wiki/Combination