Input 11 numbers: 1 2 3 4 5 6 7 8 9 10 11
f : 11
f = 6658
TOO LARGE
f : 10
f = 5003
f : 9
f = 3648
f : 8
f = 2562
f : 7
f = 1717
f : 6
f = 1082
f : 5
f = 627
f : 4
f = 322
f : 3
f = 136
f : 2
f = 41
f : 1
f = 6