From 0d9b6ebb4f6e01fb4c241055b6a2d3ddb5089185 Mon Sep 17 00:00:00 2001
From: hanyixuanten <hanyixuanten@outlook.com>
Date: Fri, 14 Aug 2026 09:07:03 +0800
Subject: [PATCH] new file:   3.cpp

---
 3.cpp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 3.cpp

diff --git a/3.cpp b/3.cpp
new file mode 100644
index 0000000..1193171
--- /dev/null
+++ b/3.cpp
@@ -0,0 +1,28 @@
+// 90
+#include <iostream>
+using namespace std;
+long long a, b, p;
+void put(__int128 a)
+{
+    char c[40];
+    if (a == 0)
+        puts("0");
+    int tot = 0;
+    while (a > 0)
+    {
+        c[tot++] = a % 10 + '0';
+        a /= 10;
+    }
+    for (int i = tot - 1; i >= 0; --i)
+    {
+        putchar(c[i]);
+    }
+    puts("");
+}
+int main()
+{
+    cin >> a >> b >> p;
+    __int128 ans = (a % p) * (b % p) % p;
+    put(ans);
+    return 0;
+}
\ No newline at end of file