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- #include <bits/stdc++.h>
- using namespace std;
- int main()
- {
- int testcase;
- cin >> testcase;
- while (testcase--)
- {
- long long int a, b, temp, count = 0;
- bool flag = false;
- cin >> a >> b;
- if (a == b)
- {
- cout << 0;
- }
- else if (a > b)
- {
- if (a % b == 0)
- {
- temp = a / b;
- while (temp != 0)
- {
- if (temp % 2 == 0)
- {
- temp = temp / 2;
- count++;
- }
- else if (temp == 1)
- {
- //count++;
- break;
- }
- else
- {
- cout << -1;
- flag = true;
- break;
- }
- }
- int temp1 = count % 3;
- int temp2 = temp1 % 2;
- int result = count / 3 + temp1 / 2 + temp2;
- if(flag == false)
- {
- cout << result;
- }
- }
- else
- {
- cout << -1;
- }
- }
- else if (a < b)
- {
- if (b % a == 0)
- {
- temp = b / a;
- while (temp != 0)
- {
- if (temp % 2 == 0)
- {
- temp = temp / 2;
- count++;
- }
- else if (temp == 1)
- {
- //count++;
- break;
- }
- else
- {
- cout << -1;
- flag = true;
- break;
- }
- }
- int temp1 = count % 3;
- int temp2 = temp1 % 2;
- int result = count / 3 + temp1 / 2 + temp2;
- if (flag == false)
- cout << result;
- }
- else
- {
- cout << -1;
- }
- }
- cout << endl;
- }
- }
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