branchless solution

1 files changed, 2 insertions, 6 deletions

diff --git a/2020/src/day02.cpp b/2020/src/day02.cpp
index d7e28f1..cb70054 100644
--- a/2020/src/day02.cpp
+++ b/2020/src/day02.cpp
@@ -30,9 +30,7 @@ part1(vector<tuple<long, long, char, string>>& data)
         long sum = 0;
         for ( const auto& [min, max, chr, password]: data ) {
                 const auto amount = count(password.begin(), password.end(), chr);
-                if ( min <= amount && amount <= max ) {
-                        ++sum;
-                }
+                sum += static_cast<long>(min <= amount && amount <= max);
         }
         cout << sum << endl;
 }
@@ -42,9 +40,7 @@ part2(vector<tuple<long, long, char, string>>& data)
 {
         long sum = 0;
         for ( const auto& [min, max, chr, password]: data ) {
-                if ( (password[size_t(min - 1)] == chr) ^ (password[size_t(max - 1)] == chr) ) {
-                        ++sum;
-                }
+                sum += ((password[size_t(min - 1)] == chr) ^ (password[size_t(max - 1)] == chr));
         }
         cout << sum << endl;
 }