快速幂也能写
#include <iostream>
#define ll long long
using namespace std;
ll c[1000];
int main(){
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    c[1] = 1;
    int cnt = 1;
    for(int i = 1 ; i <= 63 ; i++){
        ll x = 2,b = i,ans = 1;
        while(b){
            if(b % 2){
                ans *= x;
            }
            x *= x;
            b /= 2;
        }
        c[++cnt] = ans;
    }
    int n;
    cin >> n;
    for(int i = 1 ; i <= n ; i++){
        ll x;
        cin >> x;
        int l = 1,r = 63;
        while(l < r){
            int mid = (l + r) / 2;
            if(c[mid] >= x){
                r = mid;
            }
            else l = mid + 1;
        }
        if(c[l] == x){
            cout << "YES" << '\n';
        }
        else cout << "NO" << '\n';
    }
    return 0;
}