#33183: cpp ans


yp11151025@yphs.tp.edu.tw (803-23江紘宇)


#include<iostream>
using namespace std;
int main(){
    int n=1;
    char c;
    while(cin.get(c)){
        if(c=='"')
            if(n++%2) cout<<"``"; else cout<<"''";
            else cout<<c;
    }
}