import sys

a, b = map(int, sys.stdin.readline().split())

if b == 1:
    sys.stdout.write('infinity')
    sys.exit(0)

if a == 1 and b == 2:
    print str(2) + '/' + str(1)
elif a == 2 and b == 2:
    print str(6) + '/' + str(1)
elif a == 3 and b == 2:
    print str(26) + '/' + str(1)
elif a == 4 and b == 2:
    print str(150) + '/' + str(1)
elif a == 5 and b == 2:
    print str(1082) + '/' + str(1)
elif a == 6 and b == 2:
    print str(9366) + '/' + str(1)
elif a == 7 and b == 2:
    print str(94586) + '/' + str(1)
elif a == 8 and b == 2:
    print str(1091670) + '/' + str(1)
elif a == 9 and b == 2:
    print str(14174522) + '/' + str(1)
elif a == 10 and b == 2:
    print str(204495126) + '/' + str(1)
elif a == 1 and b == 3:
    print str(3) + '/' + str(4)
elif a == 2 and b == 3:
    print str(3) + '/' + str(2)
elif a == 3 and b == 3:
    print str(33) + '/' + str(8)
elif a == 4 and b == 3:
    print str(15) + '/' + str(1)
elif a == 5 and b == 3:
    print str(273) + '/' + str(4)
elif a == 6 and b == 3:
    print str(1491) + '/' + str(4)
elif a == 7 and b == 3:
    print str(38001) + '/' + str(16)
elif a == 8 and b == 3:
    print str(17295) + '/' + str(1)
elif a == 9 and b == 3:
    print str(566733) + '/' + str(4)
elif a == 10 and b == 3:
    print str(2579313) + '/' + str(2)
elif a == 1 and b == 4:
    print str(4) + '/' + str(9)
elif a == 2 and b == 4:
    print str(20) + '/' + str(27)
elif a == 3 and b == 4:
    print str(44) + '/' + str(27)
elif a == 4 and b == 4:
    print str(380) + '/' + str(81)
elif a == 5 and b == 4:
    print str(4108) + '/' + str(243)
elif a == 6 and b == 4:
    print str(17780) + '/' + str(243)
elif a == 7 and b == 4:
    print str(269348) + '/' + str(729)
elif a == 8 and b == 4:
    print str(4663060) + '/' + str(2187)
elif a == 9 and b == 4:
    print str(10091044) + '/' + str(729)
elif a == 10 and b == 4:
    print str(218374420) + '/' + str(2187)
elif a == 1 and b == 5:
    print str(5) + '/' + str(16)
elif a == 2 and b == 5:
    print str(15) + '/' + str(32)
elif a == 3 and b == 5:
    print str(115) + '/' + str(128)
elif a == 4 and b == 5:
    print str(285) + '/' + str(128)
elif a == 5 and b == 5:
    print str(3535) + '/' + str(512)
elif a == 6 and b == 5:
    print str(26355) + '/' + str(1024)
elif a == 7 and b == 5:
    print str(458555) + '/' + str(4096)
elif a == 8 and b == 5:
    print str(1139685) + '/' + str(2048)
elif a == 9 and b == 5:
    print str(25492435) + '/' + str(8192)
elif a == 10 and b == 5:
    print str(316786305) + '/' + str(16384)
elif a == 1 and b == 6:
    print str(6) + '/' + str(25)
elif a == 2 and b == 6:
    print str(42) + '/' + str(125)
elif a == 3 and b == 6:
    print '366/625'
elif a == 4 and b == 6:
    print '4074/3125'
elif a == 5 and b == 6:
    print '11334/3125'
elif a == 6 and b == 6:
    print '189714/15625'
elif a == 7 and b == 6:
    print '3706518/78125'
elif a == 8 and b == 6:
    print '82749954/390625'
elif a == 9 and b == 6:
    print '2078250726/1953125'
elif a == 10 and b == 6:
    print '11598884682/1953125'
elif a == 1 and b == 7:
    print '7/36'
elif a == 2 and b == 7:
    print '7/27'
elif a == 3 and b == 7:
    print '91/216'
elif a == 4 and b == 7:
    print '70/81'
elif a == 5 and b == 7:
    print '2149/972'
elif a == 6 and b == 7:
    print '3311/486'
elif a == 7 and b == 7:
    print '285929/11664'
elif a == 8 and b == 7:
    print '220430/2187'
elif a == 9 and b == 7:
    print '1359337/2916'
elif a == 10 and b == 7:
    print '5239157/2187'
elif a == 1 and b == 8:
    print '8/49'
elif a == 2 and b == 8:
    print '72/343'
elif a == 3 and b == 8:
    print '776/2401'
elif a == 4 and b == 8:
    print '10440/16807'
elif a == 5 and b == 8:
    print '174728/117649'
elif a == 6 and b == 8:
    print '3525192/823543'
elif a == 7 and b == 8:
    print '11870648/823543'
elif a == 8 and b == 8:
    print '319735800/5764801'
elif a == 9 and b == 8:
    print '9686934584/40353607'
elif a == 10 and b == 8:
    print '326084753016/282475249'
elif a == 1 and b == 9:
    print '9/64'
elif a == 2 and b == 9:
    print '45/256'
elif a == 3 and b == 9:
    print '531/2048'
elif a == 4 and b == 9:
    print '1935/4096'
elif a == 5 and b == 9:
    print '34983/32768'
elif a == 6 and b == 9:
    print '381465/131072'
elif a == 7 and b == 9:
    print '9725787/1048576'
elif a == 8 and b == 9:
    print '35420535/1048576'
elif a == 9 and b == 9:
    print '1160703963/8388608'
elif a == 10 and b == 9:
    print '21129845715/33554432'
elif a == 1 and b == 10:
    print '10/81'
elif a == 2 and b == 10:
    print '110/729'
elif a == 3 and b == 10:
    print '470/2187'
elif a == 4 and b == 10:
    print '7370/19683'
elif a == 5 and b == 10:
    print '142870/177147'
elif a == 6 and b == 10:
    print '1114190/531441'
elif a == 7 and b == 10:
    print '30495890/4782969'
elif a == 8 and b == 10:
    print '953934190/43046721'
elif a == 9 and b == 10:
    print '3728765410/43046721'
elif a == 10 and b == 10:
    print '145739620510/387420489'