#include<bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define dbg(a,b,c,d) cerr<<a<<"  "<<b<<"  "<<c<<"  "<<d<<endl;
#define kill(a) {cout<<a<<endl;continue;}
#define KILL(a) {cout<<a<<endl;return 0;}
#define debug cerr<<"Error Found"<<endl;
#define mem(a,b) memset(a,b,sizeof(a))
#define lcm(a, b) (a/__gcd(a,b))*b
#define w(t) cin>>t;while(t--)
#define pi  2 * acos(0.0)
#define endl "\n"
int t, cs = 0;
const int mxn = 2e5 + 3, mod = 1e9 + 7;
int dp[mxn];
void pre()
{
    mem(dp, 121);
    dp[0] = 0;
    for(int i = 1; i <= 447 ; i++)
    {
        for(int j = mxn - 2; j >= i * i; j--)
        {
            dp[j] = min(dp[j], dp[j - i * i] + 1);
        }
    }
}
int32_t main()
{
    pre();
    fast

    w(t)
    {
        int n;
        cin >> n;
        if(dp[n] > mxn)cout << -1 << endl;
        else cout << dp[n] << endl;
    }


}