摘要:
link Fenwick Tree: class Solution { public: int n; int reversePairs(vector<int>& nums) { n=nums.size(); vector<int> copy=nums; sort(copy.begin(),copy. 阅读全文
posted @ 2020-05-09 17:58
feibilun
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摘要:
link int getint(){ int res=0; char c=getchar(); while(!(c>='0' && c<='9')) c=getchar(); while(c>='0' && c<='9'){ res=res*10+(c-'0'); c=getchar(); } re 阅读全文
posted @ 2020-05-09 08:23
feibilun
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