#include <stdlib.h>
#include <stdio.h>

int has_nonzero_masked(long x, long mask) {
    return !!(x & mask);
}

int has_nonzero_omasked(long x, long mask) {
    return !!(x | mask);
}

int gt(long x, long y)
{
  return x > y;
}

long lgt(long x, long y)
{
  return x > y;
}

long max(long x, long y)
{
  return (x > y) ? x : y;
}

void smax(long x, long *vp)
{
  long v = *vp;
  if (v < x)
    *vp = x;
}

int xgty_balance = 0;
int incdecmax(int x, int y)
{
  if (x > y) {
    xgty_balance++;
    return x;
  } else {
    xgty_balance--;
    return y;
  }
}

int winx = 0;
long maxw(long x, long y)
{
  if (x > y) {
    winx++;
    return x;
  } else
    return y;
}

long fib_dw(int n)
{
  long fprev = 1L;
  long fcurr = 1L;
  do {
    long fnext = fprev+fcurr;
    fprev = fcurr;
    fcurr = fnext;
    n--;
  } while (n > 2);
  return fcurr;
}

long fib_while(int n)
{
  long fprev = 1L;
  long fcurr = 1L;
  while (n > 2) {
    long fnext = fprev+fcurr;
    fprev = fcurr;
    fcurr = fnext;
    n--;
  } 
  return fcurr;
}

int fact_while(int x)
{
  int result = 1;
  while (x > 1) {
    result *= x;
    x = x-1;
  }
  return result;
}

long fib_while2(int n)
{
  long fprev = 1L;
  long fcurr = 1L;
  int i = 2;
  while (i < n) {
    long fnext = fprev+fcurr;
    fprev = fcurr;
    fcurr = fnext;
    i++;
  } 
  return fcurr;
}

long fib_for(long n)
{
  long fprev = 1L;
  long fcurr = 1L;
  int i;
  for (i = 2; i < n; i++) {
    long fnext = fprev + fcurr;
    fprev = fcurr;
    fcurr = fnext;
  }
  return fcurr;
}

long switch_eg(long x, long y, long z)
{
    long w = 1;
    switch(x) {
    case 1:
	w = y*z;
	break;
    case 2:
	w = y/z;
	/* Fall Through */
    case 3:
	w += z;
	break;
    case 5:
    case 6:
	w -= z;
	break;
    default:
	w = 2;
    }
    return w;
}

long sparse_switch(long x, long y, long z)
{
    long w = 1;
    switch(x) {
    case 100:
	w = y*z;
	break;
    case 200:
	w = y/z;
	/* Fall Through */
    case 300:
	w += z;
	break;
    case 500:
    case 600:
	w -= z;
	break;
    default:
	w = 2;
    }
    return w;
}

long puzzle_loop(long x, long y, long z)
{
    long t1 = x+y;
    long t2 = x*y;
    long i;
    for (i = 456;
	 i > z;
	 i += t1) {
	long temp = t1;
	t1 = t2;
	t2 = temp;
    }
    return t1;
}

#if 0
long puzzle_loop(long x, long y, long z)
{
    long t1 = ____;
    long t2 = ____;
    long i;
    for (i = ____;
	 i > ____;
	 i += _____) {
	long temp = t1;
	t1 = t2;
	t2 = temp;
    }
    return t1;
}
#endif

int main(int argc, char *argv[])
{
    long x, y, z, w;
    if (argc != 4) {
	printf("Usage: %s x y z\n", argv[0]);
	exit(0);
    }
    x = strtol(argv[1], NULL, 0);
    y = strtol(argv[2], NULL, 0);
    z = strtol(argv[3], NULL, 0);
    w = switch_eg(x, y, z);
    printf("switch_eg(%ld, %ld, %ld) --> %ld\n", x, y, z, w);
    return 0;
}