use std::io::Write; use std::collections::*; type Map = BTreeMap; type Set = BTreeSet; type Deque = VecDeque; fn run() { input! { n: usize, m: usize, p: [usize1; n], e: [(usize1, usize1); m], q: usize, ask: [(usize1, usize1); q], } let mut e = e; e.retain(|e| e.0 != e.1); let mut deg = vec![0; n]; for &(a, b) in e.iter() { deg[a] += 1; deg[b] += 1; } let mut g = vec![vec![]; n]; let mut ord = (0..n).collect::>(); ord.sort_by_key(|&x| (deg[x], x)); let mut inv = vec![0; n]; for (i, x) in ord.iter().enumerate() { inv[*x] = i; } let mut set = vec![HashMap::new(); n]; for &(mut a, mut b) in e.iter() { if inv[a] > inv[b] { std::mem::swap(&mut a, &mut b); } g[a].push(b); *set[b].entry(p[a]).or_insert(0) += 1; } let mut p = p; let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); for (x, y) in ask { let ans = if p[x] != p[y] { let u = p[y]; let mut ok = false; ok |= g[x].iter().any(|v| p[*v] == u); ok |= set[x].get(&u).map_or(false, |c| *c > 0); if ok { for &v in g[x].iter() { let set = &mut set[v]; *set.get_mut(&p[x]).unwrap() -= 1; if set[&p[x]] == 0 { set.remove(&p[x]); } *set.entry(u).or_insert(0) += 1; } p[x] = u; "Yes" } else { "No" } } else { "No" }; writeln!(out, "{}", ans).ok(); } } fn main() { run(); } // ---------- begin input macro ---------- // reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 #[macro_export] macro_rules! input { (source = $s:expr, $($r:tt)*) => { let mut iter = $s.split_whitespace(); input_inner!{iter, $($r)*} }; ($($r:tt)*) => { let s = { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); s }; let mut iter = s.split_whitespace(); input_inner!{iter, $($r)*} }; } #[macro_export] macro_rules! input_inner { ($iter:expr) => {}; ($iter:expr, ) => {}; ($iter:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($iter, $t); input_inner!{$iter $($r)*} }; } #[macro_export] macro_rules! read_value { ($iter:expr, ( $($t:tt),* )) => { ( $(read_value!($iter, $t)),* ) }; ($iter:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($iter, $t)).collect::>() }; ($iter:expr, chars) => { read_value!($iter, String).chars().collect::>() }; ($iter:expr, bytes) => { read_value!($iter, String).bytes().collect::>() }; ($iter:expr, usize1) => { read_value!($iter, usize) - 1 }; ($iter:expr, $t:ty) => { $iter.next().unwrap().parse::<$t>().expect("Parse error") }; } // ---------- end input macro ----------