public class DepartmentNumbers { public static void main(String[] args) { System.out.println("Police Sanitation Fire"); System.out.println("------ ---------- ----"); int count = 0; for (int i = 2; i <= 6; i += 2) { for (int j = 1; j <= 7; ++j) { if (j == i) continue; for (int k = 1; k <= 7; ++k) { if (k == i || k == j) continue; if (i + j + k != 12) continue; System.out.printf(" %d %d %d\n", i, j, k); count++; } } } System.out.printf("\n%d valid combinations", count); } }