#include<bits/stdc++.h>
using namespace std;
int t , n , sum;
int main()
{
    scanf("%d",&t);
    while(t--) {
        scanf("%d",&n);
        sum = 0;
        for(int i = 1 ; i * i<= n ;i++ )
            sum ^= (i*i);
        printf("%d\n",sum);
    }
    return 0;
}