#include <stdio.h>
int main()
{
int c, q = 1;
while ((c = getchar()) != EOF) {
if (c == '"') { printf(q ? "``" : "''"); q ^= 1; }
else putchar(c);
}
return 0;
}
#include <stdio.h>
int main()
{
int c, q = 1;
while ((c = getchar()) != EOF) {
if (c == '"') { printf(q ? "``" : "''"); q ^= 1; }
else putchar(c);
}
return 0;
}