#include <stdio.h>

unsigned izmena(unsigned x);

int main()
{
    unsigned x;
    
    scanf("%u", &x);
    
    x = izmena(x);
 
    printf("%u", x);
    
    return 0;
}

unsigned izmena(unsigned x)
{
    unsigned mask = -1 << (sizeof(unsigned) * 8 - 4);
    x = x ^ mask;
    
    x = x & -1 << 4;
    x = x | 9;
    
    return x;
}