i,f,V,W=[23,25,294,58,-111,-92,16,17,27,16,28,16][id(0)%3::3]
d=(["-"]*W+["\n"])*V
exec'x,y,c=raw_input().split();d[int(y)*-~W+int(x)+f]=c;'*i
print"".join(d)