10 12 1 1000000000000000000 1000000000000000000 6 1000000000000000000 1 1 1 1 1 1 4 6 1 7 1 2 6 2 8 10 2 3 7 9 3 10 3 5 4 8 5 5 9
来自 Inf OJ Test 4。
输出是
3000000000000000006
解释:1-4-5-2-3-1