1 files changed, 2 insertions, 1 deletions
diff --git a/normal_distribution.cpp b/normal_distribution.cpp
index 20ef61c..211721a 100644
--- a/normal_distribution.cpp
+++ b/normal_distribution.cpp
@@ -40,13 +40,14 @@ void checkFileValid(const std::string &name, size_t length) {
 }
 
 void progress_bar(const std::set<long long> &v, size_t length) {
+  constexpr auto sleep_time = std::chrono::seconds(1);
   size_t previous_rate = 0;
   while (v.size() < length) {
     fprintf(stderr, "\rProgress %.02f%%(%lu) rate: %lu/s",
             (double)v.size() * 100 / (double)length, v.size(),
             v.size() - previous_rate);
     previous_rate = v.size();
-    std::this_thread::sleep_for(std::chrono::seconds(1));
+    std::this_thread::sleep_for(sleep_time);
   }
   fputs("", stderr);
 }