/*
# 问题分析
题设要求计算每个组的互评成绩, 并且给出了互评成绩的计算方式, 毫无疑问, 这是一道模拟题.
需要做的是明确题设给定的步骤然后翻译成代码。
 
# 完整描述步骤
1. 获取输入: 小组数量, 满分值
2. 对于每一个小组:
    - 获取输入: 教师评分, 其他小组给定的评分
    - 检查其他小组给定的分数是否在区间[0, 满分值]中, 仅计算合理的分数
    - 计算其他小组给定评分的总和, 最高分, 最低分
    - 计算其他小组给定评分的平均分 = (总分 - 最高分 -  最低分) / (合理分数个数 - 2)
    - 计算该小组得分 = （教师评分 + 其他小组评分平均分）/ 2
    - 输出小组得分
 
# 伪代码描述
1. get input: group_amount, full_score
2. for each group:
    - init recorder:
        - valid_score_amount = 0;
        - score_sum = 0;
        - max_score = -1;
        - min_score = full_score + 1;
    - get input: teacher_score, scores of other groups
    - for score in scores of other groups:
        - if score < 0 or score > full_score:
            continue;
        - if score > max_score:
            - max_score = score;
        - if score < min_score:
            - min_score = score;
        - valid_score_amount++;
        - score_sum += score;
        - group_score_averages = (score_sum - max_score - min_score) / (valid_score_amount - 2);
        - current_group_score = (teacher_score + group_score_averages) / 2;
        - print(current_group_score) # in given format
*/
 
# include<stdio.h>
 
int main(){
    int group_amount, full_score;
    scanf("%d %d", &group_amount, &full_score);
 
    for (int i = 0; i < group_amount; i++){
        int max_score = 0, min_score = full_score;
        int teacher_score;
        scanf("%d", &teacher_score);
 
        int valid_score_amount = 0;
        int group_score = 0;
        int score;
        for(int j = 1; j < group_amount; j++){
            scanf("%d", &score);
            if (0 <= score && score <= full_score){
                valid_score_amount++;
                group_score+=score;
                if (score > max_score){
                    max_score = score;
                }
                if (score < min_score){
                    min_score = score;
                }
            }
        }
 
        double group_score_average = (double)(group_score - max_score - min_score) / (valid_score_amount - 2);
        int final_score = (group_score_average + teacher_score) / 2 + 0.5;
        printf("%d\n", final_score);
    }
 
    return 0;
}