#import time
#start = time.clock()

h,w = map(int, raw_input().split())

a = []
for i in xrange(h):
	a.append( map(int, raw_input().split()) )

q_ = [None] * (h*w)
ptr = 0

def bfs (start, color) :
	global a
	global q_
	global ptr

	if a[start // w][start % w] == color :
		return 0

	dx = [0,0,1,-1]
	dy = [1,-1,0,0]

	ret = 0
	q_[ptr] = start
	ptr += 1

	a[start // w][start % w] = color

	while ptr != 0 :
		pos = q_[ptr-1]
		ptr -= 1

		x = pos % w
		y = pos // w
		
		ret += 1;

		for k in range(4) :
			xx = x + dx[k]
			yy = y + dy[k]
			next_pos = yy * w + xx
			if xx<0 or xx >= w or yy<0 or yy>=h :
				continue
			if (a[yy][xx] == color) :
				continue

			a[yy][xx] = color
			q_[ptr] = next_pos
			ptr += 1

	return ret;


filled = False;
last = -1;
q = input()

for i in xrange(q):
	r,c,x = map(int, raw_input().split())
	r = r-1;
	c = c-1;
	last = x;
	if (a[r][c] == x or filled == True) :
		continue

	cnt = bfs(r * w + c, x)
	if (w*h == cnt) : 
		filled = True

#import sys
#print >> sys.stderr, filled

if (filled == True) :
	for i in xrange(h):
		a[i] = str(last) * w

for i in xrange(h):
	print ( ' '.join(map(str, a[i])) )



#print >> sys.stderr, time.clock() - start , "sec"