add vector

vector/data/four/answer.txt

@@ -0,0 +1,22 @@
+Supplementary test for large amounts of data ...
+550658
+15523
+552292
+13889
+553926
+12255
+555560
+10621
+557194
+8987
+558828
+7353
+560462
+5719
+562096
+4085
+563730
+2451
+565364
+817
+Finished!

vector/data/four/code.cpp

@@ -0,0 +1,32 @@
+//provided by ivy
+
+#include "vector.hpp"
+#include "class-matrix.hpp"
+#include "class-bint.hpp"
+#include <iostream>
+
+void complex_test()
+{
+    std::cout << "Supplementary test for large amounts of data ..." << std::endl;
+    sjtu::vector<Diamond::Matrix<Util::Bint>> myVec;
+    for (int i = 1; i <= 1926; ++i)
+        myVec.push_back(Diamond::Matrix<Util::Bint>(i % 8 + 1, i % 17 + 1, Util::Bint(i * 817)));
+    int o = 1234;
+    while (o--)
+        myVec.pop_back();
+    myVec = myVec;
+    int _ = 20, __ = myVec.size();
+    while (_--)
+    {
+        if (_ % 2 == 0)
+            std::cout << myVec[_][0][0] << std::endl;
+        else
+            std::cout << myVec[__ - _][0][0] << std::endl;
+    }
+    std::cout << "Finished!" << std::endl;
+}
+
+int main()
+{
+    complex_test();
+}