#include<stdio.h>
#include<string.h>
 
int main()
{
    char str[10000];
    while(gets(str)){
        int len=strlen(str);
        int work=0;
        for(int i=0; i<len; i++)
        {
            if(str[i]=='"')
            {
                work++;
                if(work%2==1)
                    printf("``");
                else
                    printf("''");
            }
            else
                printf("%c",str[i]);
        }
        printf("\n");
    }
    return 0;
}
 

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"To be or not to be," quoth the Bard, "that
is the question".
The programming contestant replied: "I must disagree.
To `C' or not to `C', that is The Question!"