1 files changed, 4 insertions, 4 deletions
diff --git a/bnf.cpp b/bnf.cpp
index 7290962..4dd896e 100644
--- a/bnf.cpp
+++ b/bnf.cpp
@@ -1,8 +1,8 @@
 #include "bnf.h"
 
-std::map<std::string, std::set<std::string>> Reverse(BNF bnf)
+std::unordered_map<std::string, std::set<std::string>> Reverse(BNF bnf)
 {
- std::map<std::string, std::set<std::string>> result;
+ std::unordered_map<std::string, std::set<std::string>> result;
 
  for (const auto& [from, to] : bnf) {
   for (const auto& list : to) {
@@ -19,9 +19,9 @@ std::map<std::string, std::set<std::string>> Reverse(BNF bnf)
  return result;
 }
 
-std::map<std::string, std::set<std::string>> reverseFirst(BNF bnf)
+std::unordered_map<std::string, std::set<std::string>> reverseFirst(BNF bnf)
 {
- std::map<std::string, std::set<std::string>> result;
+ std::unordered_map<std::string, std::set<std::string>> result;
 
  for (const auto& [from, to] : bnf) {
   for (const auto& list : to) {