package weekContest.A400.A2;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * @ProjectName: LeetCode
 * @FileName: Solution
 * @Author: 杨逸
 * @Data:2024/6/2 10:18
 * @Description:
 */
public class Solution {
    public int countDays(int days, int[][] meetings) {
        Arrays.sort(meetings, (a, b) -> {
            if (a[0] > b[0]){
                return 1;
            }else if (a[0] > b[0] && a[1] < b[1]){
                return 1;
            }
            return a[0] - b[0];
        });
        int endDay = 0;
        int result = 0;
        for (int[] meeting : meetings) {
            if (meeting[0]<=endDay){
                //连续的会议
                endDay = Math.max(endDay,meeting[1]);
            }else {
                result+=meeting[0]-endDay-1;
                endDay = meeting[1];
            }
        }
        return result+=days-endDay;
    }

}