import math as mp

 
def parser():
    while 1:
        data = list(cin.read().split())
        for number in data:
            if len(number) > 0:
                yield(number)   
 
input_parser = parser()
 
def get_word():
    global input_parser
    return next(input_parser)
 
# numpy and scipy are available for use
 
cin = open("flip.in", "r")
cout = open("flip.out", "w")
 
n = get_word()
m = get_word()
 
n = int(n)
m = int(m)
 

for i in range(0, n):
	for j in range(0, m):
	   x = get_word()
print(0)