#ifndef HELPERS_SENTRY
#define HELPERS_SENTRY

#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

#define KB(n) (((unsigned long long)(n)) << 10)
#define MB(n) (((unsigned long long)(n)) << 20)
#define GB(n) (((unsigned long long)(n)) << 30)
#define TB(n) (((unsigned long long)(n)) << 40)

#define SWAP(T, a, b) do { T t__ = a; a = b; b = t__; } while(0)

#endif