a=[1,2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,10,,6,7,8,9,10,1,2,3,4,5,6,7,8,9,101,2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,10,"结束"]