暴力解法 class Solution { public: bool Find(int target, vector<vector<int> > array) { if(array.size()==0)return false; for(int i=0;i<array.size();i++){ int end=array[i].size()-1; if(array[i].size()==0) continue; if(target>array[i][end]) continue; if(target<array[i][0]) return false;...