'commit'

GESP/Level5/GESP202503/T2.cpp

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