TurpIF

def exo1():
    ls = set([raw_input() for _ in xrange(int(raw_input()))])
    print '\n'.join(['oui' if raw_input() in ls else 'non' for _ in xrange(int(raw_input()))])
#exo1()

def exo2():
    def dist(x1, y1, x2, y2):
        return abs(x1 - x2) + abs(y1 - y2)

    pos_o, pos_f = None, None

TurpIF

# Custom service file to start a network interface to route to an other
# 
# Use systemd from ArchLinux
# To install :
# Place this file in /etc/systemd/system with a chmod of 644 and root:root as
# owner. A configuration file is also required at /etc/conf.d/router.conf
# which contains some variable declarations.
#
# To start :
# # systemctl start router.service