0_0_24920943_22869.cpp:3:1: error: stray '\270' in program
给出n个数，求所有的i<j<k且a[i]<a[k]<a[j]的个数
^
0_0_24920943_22869.cpp:3:1: error: stray '\370' in program
0_0_24920943_22869.cpp:3:1: error: stray '\263' in program
0_0_24920943_22869.cpp:3:1: error: stray '\366' in program
0_0_24920943_22869.cpp:3:1: error: stray '\270' in program
0_0_24920943_22869.cpp:3:1: error: stray '\366' in program
0_0_24920943_22869.cpp:3:1: error: stray '\312' in program
0_0_24920943_22869.cpp:3:1: error: stray '\375' in program
0_0_24920943_22869.cpp:3:1: error: stray '\243' in program
0_0_24920943_22869.cpp:3:1: error: stray '\254' in program
0_0_24920943_22869.cpp:3:1: error: stray '\307' in program
0_0_24920943_22869.cpp:3:1: error: stray '\363' in program
0_0_24920943_22869.cpp:3:1: error: stray '\313' in program
0_0_24920943_22869.cpp:3:1: error: stray '\371' in program
0_0_24920943_22869.cpp:3:1: error: stray '\323' in program
0_0_24920943_22869.cpp:3:1: error: stray '\320' in program
0_0_24920943_22869.cpp:3:1: error: stray '\265' in program
0_0_24920943_22869.cpp:3:1: error: stray '\304' in program
0_0_24920943_22869.cpp:3:1: error: stray '\307' in program
0_0_24920943_22869.cpp:3:1: error: stray '\322' in program
0_0_24920943_22869.cpp:3:1: error: stray '\265' in program
0_0_24920943_22869.cpp:3:1: error: stray '\304' in program
0_0_24920943_22869.cpp:3:1: error: stray '\270' in program
0_0_24920943_22869.cpp:3:1: error: stray '\366' in program
0_0_24920943_22869.cpp:3:1: error: stray '\312' in program
0_0_24920943_22869.cpp:3:1: error: stray '\375' in program
0_0_24920943_22869.cpp:5:1: error: stray '\314' in program
题目也就是让最后那个数第二大。我们输入第i个数字a，那么我们用的树状数组存的就是sum(a-1),sum(a-1)表示在a这个位置，在前i-1个数中，有sum(a-1)个数比a小，那么我们就可以求出在后面的(i+1,n)的序列中，有R=(n-a)-(i-1-sum(a-1))个数比a要大，(n-a)表示有这么多个数比a大，(i-1-sum(a-1))表示前i-1个数里面有sum(a-1)个数比a大，那么R=(n-a)-(i-1-sum(a-1))就表示后面有多少个数比a要大。然后，我们思考一下，a当作三个数里面的最小值，然后让它们组合，是不是就是有C(R,2)即R*(R-1)/2，因为后面的序列都是固定的，所以并没有排序的概念，也就是说，原本序列1 5 4 ,那么我们没有必要去思考1 4 5的情况,因为它已经固定好了（一开始死都想不通....)，所以后面的序列选的时候直接从R个选2个就可以了，然后C(R,2)表示所有的a+两个大的(也就是小中大，小大中都包含在里面了)，那么我们要求的是小大中，所以对于每一个a来说，我们都需要减去小中大的情况，那么小中大=sum(a-1)*R，所以最后答案就是对于（1，n）所有数，求和SUM（C(R,2)-sum(a-1)*R）
^
0_0_24920943_22869.cpp:5:1: error: stray '\342' in program
0_0_24920943_22869.cpp:5:1: error: stray '\304' in program
0_0_24920943_22869.cpp:5:1: error: stray '\277' in program
0_0_24920943_22869.cpp:5:1: error: stray '\322' in program
0_0_24920943_22869.cpp:5:1: error: stray '\262' in program
0_0_24920943_22869.cpp:5:1: error: stray '\276' in program
0_0_24920943_22869.cpp:5:1: error: stray '\315' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\310' in program
0_0_24920943_22869.cpp:5:1: error: stray '\303' in program
0_0_24920943_22869.cpp:5:1: error: stray '\327' in program
0_0_24920943_22869.cpp:5:1: error: stray '\356' in program
0_0_24920943_22869.cpp:5:1: error: stray '\272' in program
0_0_24920943_22869.cpp:5:1: error: stray '\363' in program
0_0_24920943_22869.cpp:5:1: error: stray '\304' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\270' in program
0_0_24920943_22869.cpp:5:1: error: stray '\366' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\375' in program
0_0_24920943_22869.cpp:5:1: error: stray '\265' in program
0_0_24920943_22869.cpp:5:1: error: stray '\332' in program
0_0_24920943_22869.cpp:5:1: error: stray '\266' in program
0_0_24920943_22869.cpp:5:1: error: stray '\376' in program
0_0_24920943_22869.cpp:5:1: error: stray '\264' in program
0_0_24920943_22869.cpp:5:1: error: stray '\363' in program
0_0_24920943_22869.cpp:5:1: error: stray '\241' in program
0_0_24920943_22869.cpp:5:1: error: stray '\243' in program
0_0_24920943_22869.cpp:5:1: error: stray '\316' in program
0_0_24920943_22869.cpp:5:1: error: stray '\322' in program
0_0_24920943_22869.cpp:5:1: error: stray '\303' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\344' in program
0_0_24920943_22869.cpp:5:1: error: stray '\310' in program
0_0_24920943_22869.cpp:5:1: error: stray '\353' in program
0_0_24920943_22869.cpp:5:1: error: stray '\265' in program
0_0_24920943_22869.cpp:5:1: error: stray '\332' in program
0_0_24920943_22869.cpp:5:1: error: stray '\270' in program
0_0_24920943_22869.cpp:5:1: error: stray '\366' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\375' in program
0_0_24920943_22869.cpp:5:1: error: stray '\327' in program
0_0_24920943_22869.cpp:5:1: error: stray '\326' in program
0_0_24920943_22869.cpp:5:1: error: stray '\243' in program
0_0_24920943_22869.cpp:5:1: error: stray '\254' in program
0_0_24920943_22869.cpp:5:1: error: stray '\304' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\303' in program
0_0_24920943_22869.cpp:5:1: error: stray '\264' in program
0_0_24920943_22869.cpp:5:1: error: stray '\316' in program
0_0_24920943_22869.cpp:5:1: error: stray '\322' in program
0_0_24920943_22869.cpp:5:1: error: stray '\303' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\323' in program
0_0_24920943_22869.cpp:5:1: error: stray '\303' in program
0_0_24920943_22869.cpp:5:1: error: stray '\265' in program
0_0_24920943_22869.cpp:5:1: error: stray '\304' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\367' in program
0_0_24920943_22869.cpp:5:1: error: stray '\327' in program
0_0_24920943_22869.cpp:5:1: error: stray '\264' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\375' in program
0_0_24920943_22869.cpp:5:1: error: stray '\327' in program
0_0_24920943_22869.cpp:5:1: error: stray '\351' in program
0_0_24920943_22869.cpp:5:1: error: stray '\264' in program
0_0_24920943_22869.cpp:5:1: error: stray '\346' in program
0_0_24920943_22869.cpp:5:1: error: stray '\265' in program
0_0_24920943_22869.cpp:5:1: error: stray '\304' in program
0_0_24920943_22869.cpp:5:1: error: stray '\276' in program
0_0_24920943_22869.cpp:5:1: error: stray '\315' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\261' in program
0_0_24920943_22869.cpp:5:1: error: stray '\355' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\276' in program
0_0_24920943_22869.cpp:5:1: error: stray '\324' in program
0_0_24920943_22869.cpp:5:1: error: stray '\332' in program
0_0_24920943_22869.cpp:5:1: error: stray '\325' in program
0_0_24920943_22869.cpp:5:1: error: stray '\342' in program
0_0_24920943_22869.cpp:5:1: error: stray '\270' in program
0_0_24920943_22869.cpp:5:1: error: stray '\366' in program
0_0_24920943_22869.cpp:5:1: error: stray '\316' in program
0_0_24920943_22869.cpp:5:1: error: stray '\273' in program
0_0_24920943_22869.cpp:5:1: error: stray '\326' in program
0_0_24920943_22869.cpp:5:1: error: stray '\303' in program
0_0_24920943_22869.cpp:5:1: error: stray '\243' in program
0_0_24920943_22869.cpp:5:1: error: stray '\254' in program
0_0_24920943_22869.cpp:5:1: error: stray '\324' in program
0_0_24920943_22869.cpp:5:1: error: stray '\332' in program
0_0_24920943_22869.cpp:5:1: error: stray '\307' in program
0_0_24920943_22869.cpp:5:1: error: stray '\260' in program
0_0_24920943_22869.cpp:5:1: error: stray '\270' in program
0_0_24920943_22869.cpp:5:1: error: stray '\366' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\375' in program
0_0_24920943_22869.cpp:5:1: error: stray '\326' in program
0_0_24920943_22869.cpp:5:1: error: stray '\320' in program
0_0_24920943_22869.cpp:5:1: error: stray '\243' in program
0_0_24920943_22869.cpp:5:1: error: stray '\254' in program
0_0_24920943_22869.cpp:5:1: error: stray '\323' in program
0_0_24920943_22869.cpp:5:1: error: stray '\320' in program
0_0_24920943_22869.cpp:5:1: error: stray '\270' in program
0_0_24920943_22869.cpp:5:1: error: stray '\366' in program
0_0_24920943_22869.cpp:5:1: error: stray '\312' in program
0_0_24920943_22869.cpp:5:1: error: stray '\375' in program
0_0_24920943_22869.cpp:5:1: error: stray '\26
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