initial commit

data/Integer2/4.cpp

@@ -0,0 +1,31 @@
+/*
+Time: 2021-10-20
+Test: add & minus (signed)
+std Time: 0.16s
+Time Limit: 1.00s
+*/
+
+#include "int2048.h"
+
+sjtu::int2048 a, b;
+
+int main()
+{
+    int T;
+    std::cin >> T;
+    while (T--)
+    {
+        std::cin >> a >> b;
+
+        std::cout << a + b << '\n' << a - b << '\n';
+
+        std::cout << (a -= b) << '\n';
+        std::cout << (a += b) << '\n';
+
+        std::cout << (a + b) - (a - b) << '\n';
+        b += a;
+        b += b;
+        b -= a + (a - b);
+        std::cout << b << '\n';
+    }
+}