#include <stdio.h>
#include <math.h>

int main(void)
{
    long int number;
    int res;

    scanf("%ld\n",&number);
   
    res = (long int)pow(2,32.0) - number;

    if(number < pow(2,31.0))
    {
        printf("%ld\n",number);
    }

    else
    {
        printf("x%ld\n",res);
    }

    return 0;
}