N, Q = map(int, input().split())

P = list(map(int, input().split()))
for i in range(N):
  if P[i] != -1: P[i] -= 1

C = [-1]*N
for i, p in enumerate(P):
  if p != -1: C[p] = i

R = [-1]*N
for i in range(N):
  if P[i] != -1: continue
  R[i] = i
  while (i := C[i]) != -1: R[i] = R[P[i]]

for _ in range(Q):
  a, b = map(int, input().split())
  print("Yes" if R[a-1] == R[b-1] else "No")