#include <stdio.h>

int main()

{

    int i;

    int last;

    last = getchar();

    do

    {

        /* Unsigned char cast to int */

        i = getchar();

        if (i == EOF)

            break;

        if (!(last == 0xcc && i == 0x81))

        {

            putchar(last);

        }

        else

        {

            putchar('\'');

            i = getchar();

            if (i == EOF)

                /* We don't want the last putchar */

                return 0;

        }

        last = i;

    } while(1);

    putchar(last);

    return 0;

}