#define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define rep(i,n) for (int i = 0; i < (n); ++i) using namespace atcoder; using namespace std; typedef long long int ll; typedef modint998244353 mint; ll gcd(ll a, ll b) { if (a < b)swap(a, b); if (b == 0)return a; return gcd(b, a % b); } int lcm(int a, int b) { return a * b / gcd(a, b); } /* 解説動画参考 解説ブログ参考 https://blog.hamayanhamayan.com/entry/2020/08/01/122317 フェルマーの最終定理 */ int main() { vectorprf(5e6 + 5); for (ll i = 3; i <= 5e6; i += 2) { prf[i] = 1; for (ll j = 3; j * j <= i; j += 2) { if (i % j)continue; prf[i] = 0; break; } } int Q; Q = 1; cin >> Q; prf[2] = 1; while (Q--) { ll a, b; cin >> a >> b; if (!prf[b]) { cout << -1 << endl; } else { if (a % b)cout << 1 << endl; else cout << 0 << endl; } } return 0; }