This documentation is automatically generated by online-judge-tools/verification-helper
# verification-helper: PROBLEM https://judge.yosupo.jp/problem/lca
from pathlib import Path
import sys
sys.path.append(str(Path(__file__).resolve().parent.parent.parent.parent))
from src.tree.HLD import HLD
n, Q = map(int, input().split())
P = list(map(int, input().split()))
G = HLD(n)
for i, p in enumerate(P, 1):
G.add_edge(i, p)
G.build()
for _ in range(Q):
u, v = map(int, input().split())
print(G.lca(u, v))
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.11.4/x64/lib/python3.11/site-packages/onlinejudge_verify/documentation/build.py", line 81, in _render_source_code_stat
bundled_code = language.bundle(
^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.11.4/x64/lib/python3.11/site-packages/onlinejudge_verify/languages/python.py", line 108, in bundle
raise NotImplementedError
NotImplementedError