思路：线性基
代码：
#pragma GCC optimize(2) #pragma GCC optimize(3) #pragma GCC optimize(4) #include<bits/stdc++.h> using namespace std; #define fi first #define se second #define pi acos(-1.0) #define LL long long #define mp make_pair #define pb push_back #define ls rt<<1, l, m #define rs rt<<1|1, m+1, r #define ULL unsigned LL #define pll pair<LL, LL> #define pii pair<int, int> #define piii pair<pii, int> #define mem(a, b) memset(a, b, sizeof(a)) #define fio ios::sync_with_stdio(false);cin.tie(0);cout.tie(0); #define fopen freopen("in.txt", "r", stdin);freopen("out.txt", "w", stout); //head const int N = 1e5 + 5; vector<int> base; int main() { int n, t, q, a, b; scanf("%d", &n); for (int i = 1; i <= n; i++) { scanf("%d", &t); for (int j = 0; j < base.size(); j++) if((t^base[j]) < t) t ^= base[j]; if(t) base.pb(t); } scanf("%d", &q); while(q--) { scanf("%d %d", &a, &b); a ^= b; for (int i = 0; i < base.size(); i++) if((a^base[i]) < a) a ^= base[i]; if(a) puts("NO"); else puts("YES"); } return 0; }