n= int(input()) x = [] y = [] for i in range(n): a,b = map(int,input().split(',')) x.append(a) y.append(b) zuoxiajiaox = min(x)-1 zuoxiajiaoy = min(y)-1 youshangjiaox = max(x)+1 youshangjiaoy = max(y)+1 print(str(zuoxiajiaox)+','+str(zuoxiajiaoy)) print(str(youshangjiaox)+','+str(youshangjiaoy))