Advent of Code 2022 day 4

advent_of_code_2022/day4/main.cc

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <fmt/format.h>
+
+struct Range
+{
+    int start{};
+    int end{};
+};
+
+Range read()
+{
+    Range range;
+    std::cin >> range.start;
+    std::cin.ignore(1);
+    std::cin >> range.end;
+    return range;
+}
+
+int main()
+{
+    int full_overlaps = 0;
+    int partial_overlaps = 0;
+
+    while (true)
+    {
+        Range r1 = read();
+        std::cin.ignore(1);
+        Range r2 = read();
+
+        if ((r1.start <= r2.start && r1.end >= r2.end) || (r1.start >= r2.start && r1.end <= r2.end))
+            ++full_overlaps;
+        
+        if ((r1.start <= r2.start && r1.end >= r2.start) || (r1.start <= r2.end && r1.end >= r2.start))
+            ++partial_overlaps;
+
+        if (std::cin.eof())
+            break;
+    }
+
+    fmt::print("   Full Overlaps: {}\n", full_overlaps);
+    fmt::print("Partial Overlaps: {}\n", partial_overlaps);
+}