请在此添加代码

########## Begin ########## def mysum(n,m): result = 0 for i in range(1,n+1): result += i**m return result

def main(): n = int(input()) if n % 10 != 0: print('input error') else: s = mysum(n,1) + mysum(n,2)/2 + mysum(n,10)/10 print('{:.5f}'.format(s))

########## End ########## main() #调用main实现求和