Update README.md

Author: orestespap

README.md

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-# Open MP, Open MPI and Cuda parallelization using C
-C code using Open MP, OpenMPI and CUDA parallelizing tasks such as character frequency, count sort, gauss elimination and a few more frequently encountered CS problems.
+# Open MP, Open MPI and Cuda parallelization in C
+C code using Open MP, OpenMPI and CUDA parallelizing frequently encountered CS algorithms such as character frequency, count sort, gauss elimination and a few more.
+
+This code is part of the homework that I did for my undergrad High Performance Computation course at the University of Macedonia.