b[0] = 0
b[1] = 1
b[2] = 2
b[3] = 3
b[4] = 4

b[0] = 0
b[1] = 1
b[2] = 2
b[3] = 99999
b[4] = 4

b[0] = 0
b[1] = 1
b[2] = 1010101
b[3] = 99999
b[4] = 4