Step 1: Let's see who scored the least among the four people. Four people subtract this score at the same time, and remember this score after subtraction, which is the actual score you get.

Step 2: Add up the actual scores of four people and get the total score.

Step 3: multiply your actual score by four and subtract the total score, which is the score you should win or lose.

For example, after one lap, A gets 60 points, B gets 45 points, C gets 80 points and D gets 10 points. The lowest score is d 10, and the scores of four people are reduced at the same time 10. A actually scored 50, B actually scored 35, C actually scored 70, D actually scored 0, and the total score of four people was 155. The result of A: 60 points multiplied by 4 get 240 points, then subtract the total score 155 points, A finally gets 85 points, and A wins 85 points; Result of B: Multiply 35 points by 4 to get 140 points, and then subtract the total score 155 points. The final score of B is negative 15, and B loses 15; For the score of C, 70 points multiplied by 4 will get 280 points, and then the total score 155 points will be subtracted, so that C will finally get 125 points and C will win 125 points; Ding's result: multiply 0 by 4 to get 0, and then subtract the total score 155. Ding's final score was negative 155, and Ding lost 155.

This is explained according to the calculation steps of mathematics, and I hope it will help you.