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

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

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

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

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

    return 0;
}