diff --git a/AtCoder/AGC048/B/B.cpp b/AtCoder/AGC048/B/B.cpp
new file mode 100644
index 00000000..7c575437
--- /dev/null
+++ b/AtCoder/AGC048/B/B.cpp
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <queue>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 1e5 + 5;
+
+int n, a[N], b[N];
+long long ans;
+std::priority_queue<int> q1, q2;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    cin >> n;
+
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+
+        ans += a[i];
+    }
+
+    for (int i = 1; i <= n; i++) {
+        cin >> b[i];
+
+        (!(i & 1) ? q1 : q2).push(b[i] - a[i]);
+    }
+
+    while (!q1.empty()) {
+        int t = q1.top() + q2.top();
+        q1.pop(), q2.pop();
+
+        if (t <= 0) break;
+        ans += t;
+    }
+
+    cout << ans << endl;
+
+    return 0;
+}