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#include <bits/stdc++.h>
using namespace std;
// long long abs (long long x, long long y)
// {
// long long z;
// z = x - y;
// if (z < 0)
// {
// z *= (-1);
// }
// return z;
// }
int main()
{
long long t, v, m, n, x, y, z, i, j, k, a, b, d, p, q;
long long num, val, check, count, sum, maxm, minm, mid;
long long c0, c1;
string s;
cin >> t;
v = t;
// v = 1;
while (v > 0)
{
v --;
cin >> n;
// cin >> s;
// long long arr[n], ori[n], ref[n];
// n = s.length ();
// for (i = 0; i < n; i++)
// {
// cin >> arr[i];
// }
if (n == 1)
{
cout << "0" << endl;
}
else if (n % 2 == 1)
{
cout << "1" << endl;
}
else
{
x = n;
while (x % 4 == 0)
{
x /= 4;
}
if (x % 2 == 0)
{
cout << "-1" << endl;
}
else
{
y = sqrt (n);
if (n == (y * y))
{
cout << "1" << endl;
}
else
{
cout << "2" << endl;
}
// j = 2;
// check = 0;
// for (i = y; i >= 2; i--)
// {
// while (j < 100)
// {
// if (pow (i, j) == n)
// {
// cout << "1" << endl;
// check = 1;
// break;
// }
// else if (pow (i, j) > n)
// {
// i --;
// }
// else
// {
// i /= 2;
// i ++;
// j ++;
// }
// if (i <= 2)
// {
// break;
// }
// }
// if (i <= 2)
// {
// break;
// }
// if (check == 1)
// {
// break;
// }
// }
// if (check == 0)
// {
// cout << "2" << endl;
// }
}
}
}
return 0;
}
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long ul;
typedef unsigned long long ull;
#define rep(i,a,b) for(ull i=a; i<b; i++)
#define repeat(n) for(int i=0; i<n; i++)
#define err 1e-5
#define _z ios_base::sync_with_stdio(false); cin.tie(NULL);
#define endl "\n"
#define pii pair<int,int>
void solve()
{
ll n;
cin>>n;
if(n==1)
{
cout<<"0"<<endl;
return;
}
else if(n%2==1)
{
cout<<"1"<<endl;
return;
}
int count=0;
while(n%2==0)
{
count++;
n/=2;
}
if(count%2==1)
{
cout<<"-1"<<endl;
return;
}
else
{
ll x= sqrt(n);
if(n==x*x)
{
cout<<"1"<<endl;
return;
}
}
cout<<"2"<<endl;
}
int main()
{
_z;
int t;
cin>>t;
while(t--)
{
solve();
}
}
import math
t = int(input())
for _ in range(t):
n = int(input())
r = math.sqrt(n)
if n % 2 == 1:
print(min(n-1,1))
elif r == math.floor(r):
print(1)
else:
while n >= 4 and n % 4 == 0:
n /= 4
if n == 1:
print(1)
elif n % 2 == 1:
print(2)
else:
print(-1)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
long long int numberof2(long long int n)
{
long long int t=0;
while(n%2==0)
{
n=n/2;
t++;
}
return t;
}
void loki()
{
int t;
scanf("%d",&t);
while(t--)
{
long long int n;
scanf("%lld",&n);
long long int nof2=numberof2(n);
long long int square=sqrt(n);
long long int num=pow(square,2);
if(n==1)
printf("0\n");
else if(n%2==1||num==n)
printf("1\n");
else
{
if(nof2%2==1)
printf("-1\n");
else
{
long long int p=pow(2,nof2);
n=n/p;
if(n==1)
printf("1\n");
else
printf("2\n");
}
}
}
}
int main(void) {
loki();
return 0;
}
/* package codechef; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner in = new Scanner(System.in);
int t = in.nextInt();
for (int k = 0; k < t; k++) {
long n = in.nextLong();
if (n == 1) {
System.out.println(0);
continue;
}
if (n % 2 == 1) {
System.out.println(1);
continue;
}
int cnt = 0;
while (n % 2 == 0) {
cnt += 1;
n /= 2;
}
if (cnt % 2 == 0) {
boolean flag = false;
for (int i = 2; i <= cnt; i+= 2) {
if (cnt % i != 0) {
continue;
}
double p = 1.0 / i;
if ( Math.pow((double)n, p) == (int) Math.pow((double)n, p)) {
flag = true;
break;
}
}
if (flag == true) {
System.out.println(1);
} else {
System.out.println(2);
}
} else {
System.out.println(-1);
}
}
}
}
import math
N = int(input())
for i in range(N):
n = int(input())
r = math.sqrt(n)
if n % 2 == 1:
print(min(n-1,1))
elif r == math.floor(r):
print(1)
else:
while n >= 4 and n % 4 == 0:
n /= 4
if n == 1:
print(1)
elif n % 2 == 1:
print(2)
else:
print(-1)
import math
t = int(input())
for i in range(t):
n = int(input())
if n == 1:
print(0)
continue
if int(math.sqrt(n))**2 == n:
print(1)
continue
if n%2==1:
print(1)
else:
e = 0
d = n
while d%2==0:
d //= 2
e+=1
if e%2==1:
print(-1)
elif d==1:
print(1)
else:
print(2)
using System;
using System.Linq;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Text;
using System.Numerics;
public class Test
{
public static int GetInt() => int.Parse(Console.ReadLine());
public static long GetLong() => long.Parse(Console.ReadLine());
public static int[] GetIntArray() => Console.ReadLine().Trim().Split(' ').Select(int.Parse).ToArray();
public static long[] GetLongArray() => Console.ReadLine().Trim().Split(' ').Select(long.Parse).ToArray();
public static int Gcd(int a, int b) => b == 0 ? a : Gcd(b, a%b);
public static int Gcd(int[] n) => n.Aggregate((a,b) => Gcd(a,b));
public static void Main()
{
var t=GetInt(); for(int i = 0; i<t; i++) { Solve(); }
// Solve();
}
public static void Solve()
{
long n = GetLong();
long ncopy = n;
if(n == 1)
{
Console.WriteLine(0);
return;
}
int p2 = 0;
while(n%2 == 0)
{
n /=2;
p2++;
}
if(p2 == 0)
{
Console.WriteLine(1);
return;
}
if(p2 % 2 != 0)
{
Console.WriteLine(-1);
return;
}
int ans = 1;
long q = (long)Math.Sqrt(ncopy);
if(ncopy != q * q)
{
ans++;
}
Console.WriteLine(ans);
}
}
package main
import (
"bufio"
"bytes"
"fmt"
"math"
"os"
)
func main() {
reader := bufio.NewReader(os.Stdin)
var buf bytes.Buffer
tc := readNum(reader)
for tc > 0 {
tc--
var n uint64
s, _ := reader.ReadBytes('\n')
readUint64(s, 0, &n)
res := solve(int64(n))
buf.WriteString(fmt.Sprintf("%d\n", res))
}
fmt.Print(buf.String())
}
func readUint64(bytes []byte, from int, val *uint64) int {
i := from
var tmp uint64
for i < len(bytes) && bytes[i] >= '0' && bytes[i] <= '9' {
tmp = tmp*10 + uint64(bytes[i]-'0')
i++
}
*val = tmp
return i
}
func readInt(bytes []byte, from int, val *int) int {
i := from
sign := 1
if bytes[i] == '-' {
sign = -1
i++
}
tmp := 0
for i < len(bytes) && bytes[i] >= '0' && bytes[i] <= '9' {
tmp = tmp*10 + int(bytes[i]-'0')
i++
}
*val = tmp * sign
return i
}
func readString(reader *bufio.Reader) string {
s, _ := reader.ReadString('\n')
for i := 0; i < len(s); i++ {
if s[i] == '\n' {
return s[:i]
}
}
return s
}
func readNum(reader *bufio.Reader) (a int) {
bs, _ := reader.ReadBytes('\n')
readInt(bs, 0, &a)
return
}
func readTwoNums(reader *bufio.Reader) (a int, b int) {
res := readNNums(reader, 2)
a, b = res[0], res[1]
return
}
func readThreeNums(reader *bufio.Reader) (a int, b int, c int) {
res := readNNums(reader, 3)
a, b, c = res[0], res[1], res[2]
return
}
func readNNums(reader *bufio.Reader, n int) []int {
res := make([]int, n)
x := 0
bs, _ := reader.ReadBytes('\n')
for i := 0; i < n; i++ {
for x < len(bs) && (bs[x] < '0' || bs[x] > '9') && bs[x] != '-' {
x++
}
x = readInt(bs, x, &res[i])
}
return res
}
func solve(n int64) int64 {
if n == 1 {
return 0
}
//sqrt(n) LTE
var count int
for n%2 == 0 {
n /= 2
count++
}
if count == 0 {
return 1
}
if count%2 == 1 {
return -1
}
x := int64(math.Sqrt(float64(n)))
if x*x == n {
return 1
}
return 2
}
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