T249186 gcd.

https://www.luogu.com.cn/record/80961239

Luogu/T249186/T249186.cpp

@@ -0,0 +1,28 @@
+#include <iostream>
+#include <cmath>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+int t;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> t;
+
+    while (t--) {
+        long long l, r, x;
+
+        cin >> l >> r >> x;
+
+        int a = static_cast<long long>(std::floor(static_cast<long double>(l) / x)),
+            b = static_cast<long long>(std::floor(static_cast<long double>(r) / x));
+
+        cout << (a == b ? a : 1) << endl;
+    }
+
+    return 0;
+}