#include <iostream> #include <string> using namespace std; int main() { string str; bool left = true; while(getline(cin, str)) { for(int i=0;i<str.size();++i) { if(str[i] == '"') { left ? cout << "``" : cout << "''"; left = !left; } else cout << str[i]; } cout << endl; } return 0; }<!-- more -->