solve_sum.py

def solve(sum):
    sum_left = sum
    func_h_r = []
    for i in range(1,sum_left):
        sum_left = sum_left - i
        func_h_r.append(i)
        if sum_left>=i:
            continue
        else:
            break
    h=len(func_h_r)
    while sum_left>0:
        i-=1
        sum_left=sum_left-i
        func_h_r.append(i)
        if sum_left==0:
            n_h_r=len(func_h_r)
            break
        elif sum_left<0:
            n_h_r=-1
        else:
            continue
    return print(func_h_r)

solve(5)