820 B | 820 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
BLANK = " "
inp = input
# inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def f(a, crt):
a = "".join(a)
crt = "".join(crt)
for i in range(len(a)):
if a[i] == '.' and crt[i] == 'x':
return False
return True
def solve():
h, w, n = mii()
l = []
for i in range(n):
l.append([input() for j in range(h)])
crt = [input() for j in range(h)]
cnt = 0
for i in range(n):
if f(l[i], crt):
cnt += 1
if cnt == 1:
p("yes")
else:
p("no")
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()