方法一:
vector<vector>array=(2,vector());
array[0].push_back(1);
array[i].push_back(2);
方法二:
vector<vector >array={{1,2},{3,4}};
方法一:
vector<vector>array=(2,vector());
array[0].push_back(1);
array[i].push_back(2);
方法二:
vector<vector >array={{1,2},{3,4}};