f(-1) = -1
f(0) = -1
f(1) = 34
f(2) = 56
f(3) = 78
f(4) = 123
f(5) = 456
f(6) = 789
f(7) = 11
f(8) = 22
f(9) = 33
f(10) = 44
f(11) = 55
f(12) = 66
f(13) = 77
f(14) = 88
f(15) = 99
f(16) = 321
f(17) = 654
f(18) = 987
f(19) = 1001
f(20) = -1
g(9223372036854775807) = 1
g(-9223372036854775808) = 2
g(1249835483136) = -1
g(-1) = -1
g(0) = 3
g(1) = -1
g(2) = -1
g(3) = -1
g(4) = 4
g(5) = -1
g(6) = -1
g(7) = -1
g(8) = -1
g(9) = -1
g(10) = -1
g(11) = -1
g(12) = -1
g(13) = 5
g(14) = -1
g(15) = -1
g(16) = -1
g(17) = -1
g(18) = -1
g(19) = -1
g(20) = -1