求无限级次方高效算法
10000000000000000000000,00000000000000000000000,000000000000000000000000,0000000000000000000,00000000000000,0000000000000000000,0000000000000000,0000000000000000,000000000000000000
的
10000000000000000000000,00000000000000000000000,000000000000000000000000,0000000000000000000,00000000000000,0000000000000000000,0000000000000000,0000000000000000,000000000000000000
次方结果