ff = open('../base_exp.txt', 'r')
lis = ff.readlines()
ff.close()

from math import log10

maxx = [0, 0]
for i in xrange(len(lis)):
  tmp = lis[i].split(',')
  base = int(tmp[0])
  power = int(tmp[1])
  loga = power * log10(base)
  if loga > maxx[0]:
    maxx = [loga, i + 1]

print maxx