1 files changed, 12 insertions, 9 deletions

diff --git a/2020/src/day01.cpp b/2020/src/day01.cpp
index d2d8629..67f88c4 100644
--- a/2020/src/day01.cpp
+++ b/2020/src/day01.cpp
@@ -32,24 +32,27 @@ process(const vector<long>& values)
 void
 combination(const vector<long>& values, size_t r)
 {
-        vector<bool> v(values.size());
-        fill(v.end() - long(r), v.end(), true);
-        vector<long> set(r);
+        vector<bool> marker(values.size());
+
+        fill(marker.end() - long(r), marker.end(), true);
+
+        vector<long> subset(r);
+
         do {
-                set.clear();
+                subset.clear();
                 for ( size_t i = 0; i != values.size(); ++i ) {
-                        if ( v[i] ) {
-                                set.emplace_back(values[i]);
+                        if ( marker[i] ) {
+                                subset.emplace_back(values[i]);
                         }
                 }
-                process(set);
-        } while ( std::next_permutation(v.begin(), v.end()) );
+                process(subset);
+        } while ( std::next_permutation(marker.begin(), marker.end()) );
 }
 
 int
 main()
 {
-        auto values = read_file("data/day01-sample1.txt");
+        auto values = read_file("data/day01.txt");
         combination(values, 2);
         combination(values, 3);
 }