CSES - Concert Tickets 2

from sys import stdin, stdout
from bisect import bisect_left
n, m = map(int, stdin.readline().split())
h = list(map(int, stdin.readline().split()))
h.sort()
t = list(map(int, stdin.readline().split()))
p = []
for i in t:
    v = bisect_left(h, i + 1)
    if v <= 0:
        p.append("-1")
    else:
        r = h.pop(v - 1)
        p.append(str(r))
stdout.write("\n".join(p))