#!/usr/bin/env python3

# Copyright (c) 2015, Bartlomiej Puget <larhard@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions and the following disclaimer.
#
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions and the following disclaimer in the documentation
#     and/or other materials provided with the distribution.
#
#   * Neither the name of the Bartlomiej Puget nor the names of its
#     contributors may be used to endorse or promote products derived from this
#     software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL BARTLOMIEJ PUGET BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import argparse

from matplotlib import pyplot


def main():
    nvertices = int(input())
    vertices = [tuple(map(lambda k: float(k), input().split()))
        for _ in range(nvertices)]

    figure = pyplot.figure()
    ax = figure.add_subplot(111)

    xs, ys = zip(*vertices)
    ax.plot(xs, ys, '-')
    ax.plot(xs, ys, 'ro')
    pyplot.show()


if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    args = parser.parse_args()

    main(**vars(args))

add plotter