print( "Fire", "Police", "Sanitation" ) sol = 0 for f = 1, 7 do for p = 1, 7 do for s = 1, 7 do if s + p + f == 12 and p % 2 == 0 and f ~= p and f ~= s and p ~= s then print( f, p, s ); sol = sol + 1 end end end end print( string.format( "\n%d solutions found", sol ) )