思路: 字符串其实只有0...0, 0...1, 1...0, 1...1四种. 实现: #include <bits/stdc++.h> using namespace std; ]; bool work(set<string>& a, set<string>& b, map<string, int>& mp, vector<int>& res) { int d = a.size() - b.size(); fo…