进制转换

0 2^0 1

2^1 10 2

2^2 100 4

2^3 1000 8

2^4 10000 16

2^5 100000 32

2^6 1000000 64

2^7 10000000 128

2^8 100000000 256

2^9 1000000000 512

2^10 10000000000 1024