#include namespace { #pragma GCC diagnostic ignored "-Wunused-function" #include #pragma GCC diagnostic warning "-Wunused-function" using namespace std; using namespace atcoder; #define rep(i,n) for(int i = 0; i < (int)(n); i++) #define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--) #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) template bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; } template bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; } using ll = long long; using P = pair; using VI = vector; using VVI = vector; using VL = vector; using VVL = vector; constexpr int M = 20000; using BS = bitset; BS c2p[M]; BS adj[M]; } int main() { ios::sync_with_stdio(false); cin.tie(0); int n, m; cin >> n >> m; VI c(n); rep(i, n) cin >> c[i], c[i]--, c2p[c[i]][i] = true; rep(_, m) { int a, b; cin >> a >> b; a--, b--; adj[a][b] = adj[b][a] = true; } int q; cin >> q; while(q--) { int x, y; cin >> x >> y; x--, y--; if (c[x] != c[y] && (adj[x] & c2p[c[y]]).any()) { cout << "Yes\n"; c2p[c[x]][x] = false; c[x] = c[y]; c2p[c[x]][x] = true; } else { cout << "No\n"; } } }