#!/usr/bin/env python

from pylab import *
import sys

a, b, f = loadtxt(sys.stdin, unpack=True)
title('Landau distribution sampling', loc='right')
hist(a, np.insert(b, 0, a[0]), weights=f/sum(f))
annotate(f'N={sum(f)}\nbins={len(f)}', (50, 0.2))
show()