题解 | 查询满足区间的记录

num1 = int(input())
signal = int(input())
count_list=[]
for i in range(1,num1+1):
    list_temp=list(map(int, input().split()))
    if(list_temp[1]<=signal  and signal<=list_temp[2]):
        count_list.append(list_temp[0])
    else:
        continue
    list_temp=[]
count_list.sort()
if(len(count_list)==0):
    print('null')
else:
    for k in count_list:
        print(k)