added a printf debug statement

preprocessing/preprocessing.cpp

@@ -168,10 +168,14 @@ int main(int argc, char * argv[])
     std::chrono::duration<double> elapsed_seconds = end-start;
     std::cout << "time to generate and evaluate " << n_threads << " dpfs of size 2^" << atoi(argv[4]) << " is: " << elapsed_seconds.count() << "s\n";
 
+    start = std::chrono::steady_clock::now();
     for(size_t i = 0; i < n_threads; ++i)
     {
      write_evalfull_outs_into_a_file(party, i, db_nitems, flags[i],  leaves[i], final_correction_word[i], additve_shares[i]); 
     }
+     end = std::chrono::steady_clock::now();
+     elapsed_seconds = end-start;
+     std::cout << "time to do filesio is: " << elapsed_seconds.count() << "s" << std::endl;;
     
     #ifdef VERBOSE
      for(size_t j = 0; j < n_threads; ++j)