Current location - Health Preservation Learning Network - Healthy weight loss - The integral rules in football league are generally: win one game and get 3 points; Tie, each 1 point; If you lose a game, you get 0 points. A football team plays for one season.
The integral rules in football league are generally: win one game and get 3 points; Tie, each 1 point; If you lose a game, you get 0 points. A football team plays for one season.
Let the winning field number be X and the flat field number be Y, then the negative field number is (15-X-Y);

3x+y+0( 15-x-y)=33,

3x+y=33,

y=33-3x

X and y are positive integers or 0, and x+y ≤15;

①x = 9y = 6;

15-9-6=0;

②x = 10y = 3;

15- 10-3=2;

③ x= 1 1 y=0。

15- 1 1-0=4;

There are three situations: ①9 wins, 6 draws and 0 losses; ② 10 wins, 3 draws and 2 losses; ③ 1 1 win, 0 draw and 4 losses.

So the answer is: 3.