#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main()
{
int ans=0;
char a[10000];
while(gets(a))
{
int T=0;
while(a[T])
{
if(a[T]=='\"')
{
ans++;
if(ans%2==1)
{
cout<<"``";
}
if(ans%2==0)
{
cout<<"''";
}
}
else
cout<<a[T];
T++;
}
cout<<"\n";
}
}