diff --git a/lab10/jacobi/jacobi_mpi.cpp b/lab10/jacobi/jacobi_mpi.cpp
index a3c4fa3..8c18c1d 100644
--- a/lab10/jacobi/jacobi_mpi.cpp
+++ b/lab10/jacobi/jacobi_mpi.cpp
@@ -19,6 +19,8 @@ Jacobi::Result JacobiMPI::run(const Matrix &init, double epsilon,
   int rank, numProc;
   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
   MPI_Comm_size(MPI_COMM_WORLD, &numProc);
+  std::cout << "rank: " << rank << std::endl;
+  std::cout << "numProc: " << numProc << std::endl;
 
   std::vector<Matrix> phi(2, init);