diff --git a/src/week5/BOJ1781/BOJ1781_V1.cpp b/src/week5/BOJ1781/BOJ1781_V1.cpp
new file mode 100644
index 0000000..2e79abf
--- /dev/null
+++ b/src/week5/BOJ1781/BOJ1781_V1.cpp
@@ -0,0 +1,37 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main() {
+
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+    cout.tie(nullptr);
+
+    vector<pair<int, int>> inp;
+    int n;
+    cin >> n;
+    for (int i=0; i<n; i++) {
+        int d,c;
+        cin >> d >> c;
+        inp.push_back({d,c});
+    }
+
+    sort(inp.begin(), inp.end());
+    priority_queue<int, vector<int>, greater<int>> pq;
+    for (auto [d,p] : inp) {
+        pq.push(p);
+        if (pq.size() > d) {
+            pq.pop();
+        }
+    }
+
+    int ret=0;
+    while(!pq.empty()) {
+        ret += pq.top();
+        pq.pop();
+    }
+
+    cout << ret << '\n';
+
+
+    return 0;
+}
\ No newline at end of file