37 lines
601 B
C++
37 lines
601 B
C++
#include <bits/stdc++.h>
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using namespace std;
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#define int long long
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int a, p;
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// 快速幂
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int qmi(int a, int b, int p) {
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int res = 1;
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while (b) {
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if (b & 1)
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res = res * a % p;
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b >>= 1;
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a = a * a % p;
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}
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return res;
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}
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void solve() {
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int a, p;
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cin >> a >> p;
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int phi = p - 1;
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for (int k = 2; k * k <= phi; k++) {
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if (phi % k == 0) {
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if (qmi(a, k, p) == 1 || qmi(a, phi / k, p) == 1) {
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puts("No");
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return;
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}
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}
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}
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puts("Yes");
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}
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signed main() {
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int T;
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cin >> T;
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while (T--)
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solve();
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} |