def foun(f):
'''Main driver to solve this problem.'''
lines = ro.read_lines(f)
(N, m), a = map(int, lines[0].split()), map(int, lines[1].split())
b = np.zeros((m, len(a)))
for j, aj in enumerate(a): b[:, j] = [np.log10(x[0]) for x in it.islice(ro.wf_pmf(2*N, aj), m)]
np.savetxt(sys.stdout, b, '%f')
def wfmd(f):
'''Main driver to solve this problem.'''
N, m, g, k = ro.read_ints_str(f)
n = 2 * N
return sum(it.islice(ro.wf_pmf(n, m), g - 1, g).next()[:n - k + 1])