diff --git a/Sheet_5/bsp_5_1.pdf b/Sheet_5/bsp_5_1.pdf
new file mode 100644
index 0000000..5180fe1
Binary files /dev/null and b/Sheet_5/bsp_5_1.pdf differ
diff --git a/Sheet_5/bsp_5_2.pdf b/Sheet_5/bsp_5_2.pdf
new file mode 100644
index 0000000..f7eee49
Binary files /dev/null and b/Sheet_5/bsp_5_2.pdf differ
diff --git a/Sheet_5/bsp_5_3.pdf b/Sheet_5/bsp_5_3.pdf
new file mode 100644
index 0000000..70c7cd2
Binary files /dev/null and b/Sheet_5/bsp_5_3.pdf differ
diff --git a/Sheet_5/bsp_5_4.pdf b/Sheet_5/bsp_5_4.pdf
new file mode 100644
index 0000000..4ed88e8
Binary files /dev/null and b/Sheet_5/bsp_5_4.pdf differ
diff --git a/Sheet_5/gh_response.txt b/Sheet_5/gh_response.txt
new file mode 100644
index 0000000..433bb71
--- /dev/null
+++ b/Sheet_5/gh_response.txt
@@ -0,0 +1,16 @@
+Good summary of results.
+
+1: OK
+
+2: OK
+
+3: OK
+task3.cpp:32
+non initialzed memory for thread 0 (and the other threads)
+
+4: OK
+
+5:
+CRS_Matrix::GetDiag  non parallel
+CRS_Matrix::CalculateLaplace: 
+  "omp critical" is slower than an "omp atomic" for the +=  [worth to test that]