Upd: 重命名文件夹。这些都是 corner case 测试。

data/Corner/1.cpp

@@ -0,0 +1,40 @@
+/*
+Time: 2023-10-20
+Test: Custom constructor. Div and mod.
+std Time: 0.00s
+Time Limit: 1.00s
+Notes: Sanity check.
+*/
+
+#include "int2048.h"
+
+void sanity_check(sjtu::int2048 &x,sjtu::int2048 &y) {
+    // Sanity check of division
+    std::cout
+        << x / y    << ' '
+        << -x / y   << ' '
+        << x / -y   << ' '
+        << -x / -y  << '\n';
+
+    // Sanity check of mod
+    std::cout
+        << x % y    << ' '
+        << -x % y   << ' '
+        << x % -y   << ' '
+        << -x % -y  << '\n';
+}
+
+signed main() {
+    sjtu::int2048 x {"0000000000001145141919810"};
+    sjtu::int2048 y {"-1145141919810"};
+
+    y += 1;
+    sanity_check(x, y);
+
+    y += -2;
+    y -= -1;
+
+    sanity_check(x, y);
+
+    return 0;
+}