FourNumbers

#include <stdio.h>
#define TRUE (1)
#define FALSE !TRUE
int sum(int a, int b, int c, int d) {
  int s = a + b + c + d;
  if (15 <= s && s <= 24) return TRUE;
  return FALSE;
}
int odd(int a, int b, int c, int d) {
  int o = (a % 2 == 0) + (b % 2 == 0) + (c % 2 == 0) + (d % 2 == 0);
  if (o == 1 || o == 2) return TRUE;
  return FALSE;
}
int small(int a, int b, int c, int d) {
  int s = (a < 5) + (b < 5) + (c < 5) + (d < 5);
  if (s == 2 || s == 3) return TRUE;
  return FALSE;
}
int main(void) {
  int a, b, c, d;
  for (a = 0; a < 10; a++)
    for (b = a + 1; b < 10; b++)
      for (c = b + 1; c < 10; c++)
        for (d = c + 1; d < 10; d++)
          if (sum(a, b, c, d) && odd(a, b, c, d) && small(a, b, c, d))
            printf("%d %d %d %d\n", a, b, c, d);
  return 0;
}