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37 lines
599 B
C++
37 lines
599 B
C++
#include <iostream>
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#include <algorithm>
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#include <cmath>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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int t;
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long long x, z;
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int main() {
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std::ios::sync_with_stdio(false);
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cin >> t;
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while (t--) {
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cin >> x >> z;
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if (!z) {
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cout << 0 << endl;
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continue;
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}
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long long yg = z / x,
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gg = std::__gcd(x * x, yg),
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g = std::sqrt(gg);
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if (gg != g * g || z % x) {
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cout << -1 << endl;
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} else {
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cout << yg / g << endl;
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}
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}
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return 0;
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}
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