diff --git a/src/week7/BOJ2240/BOJ2240_V1.cpp b/src/week7/BOJ2240/BOJ2240_V1.cpp
new file mode 100644
index 0000000..a9b7ab0
--- /dev/null
+++ b/src/week7/BOJ2240/BOJ2240_V1.cpp
@@ -0,0 +1,35 @@
+#include <bits/stdc++.h>
+using namespace std;
+int T,W, dp[1000][2][31];
+int arr[1000];
+int solve(int idx, int tree, int cnt) {
+    if (cnt < 0) return -1e9;
+
+    if (idx == T) return 0;
+
+    int &ret = dp[idx][tree][cnt];
+
+    if (ret != -1) return ret;
+
+    return ret = max(solve(idx+1, tree, cnt), solve(idx+1, tree^1, cnt-1)) + (tree == arr[idx]-1);
+}
+int main() {
+
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+    cout.tie(nullptr);
+
+    cin >> T >> W;
+
+    memset(dp, -1, sizeof(dp));
+
+    for (int i=0; i<T; i++) {
+        cin >> arr[i];
+    }
+
+    int ret = max(solve(0,0,W),solve(0, 1, W-1));
+
+    cout << ret << '\n';
+
+    return 0;
+}