#include <stdio.h>
#include <stdint.h>

int main() {
   uint32_t a = 0;
   uint32_t b = 1;

   uint32_t c = 0;
   uint32_t d = 1;

   uint32_t e = 0xfffffffd;
   uint32_t f = 0xfffffffd;

   a = -a;
   b = -b;

   c = 1u + ~c;
   d = 1u + ~d;

   e = -e;
   f = 1u + ~f;

   printf("a: %x, b: %x, c: %x, d: %x, e: %x, f: %x", a, b, c, d, e, f);
}