1
n, v = map(int, input().split())
2
ans = []
3
for i in range(n):
4
    s = input().split()
5
    k = int(s[0])
6
    for x in s[1:]:
7
        if v > int(x):
8
            ans.append(i + 1)
9
            break
10
    
11
print(len(ans))
12
for x in ans:
13
    print(x, end=' ')