1 files changed, 48 insertions, 0 deletions
diff --git a/2022/Day4/main.cpp b/2022/Day4/main.cpp
new file mode 100644
index 0000000..b511da8
--- /dev/null
+++ b/2022/Day4/main.cpp
@@ -0,0 +1,48 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+struct P2 {
+  int start;
+  int end;
+};
+
+void solve_part_one() {
+  P2 first, second;
+  int ans = 0;
+  while(cin >> first.start >> first.end >> second.start >> second.end) {
+    if ((first.start >= second.start && first.end <= second.end) || (second.start >= first.start && second.end <= first.end)) {
+      ans++;
+    }
+  }
+  cout << ans << '\n';
+}
+
+void solve_part_two() {
+  P2 f, s;
+  int ans = 0;
+  while(cin >> f.start >> f.end >> s.start >> s.end) {
+    vector<int> vis(100, 0);
+    for (int i = f.start; i <= f.end; i++) {
+      vis[i] += 1;
+    }
+    for (int i = s.start; i <= s.end; i++) {
+      vis[i] += 1;
+    }
+    for (int i = 0; i <= vis.size(); i++) {
+      if(vis[i] == 2) {
+        ans++;
+        break;
+      }
+    }
+  }
+  cout << ans << '\n';
+}
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+  // solve_part_one();
+  solve_part_two();
+}
+
+