diff --git a/rivkms/README.md b/rivkms/README.md
index bec8994..5c1bf5b 100644
--- a/rivkms/README.md
+++ b/rivkms/README.md
@@ -12,3 +12,4 @@
 | 8차시 | 2024.03.01 | Greedy | [회의실 배정](https://www.acmicpc.net/problem/1931) | [#8](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/28) |
 | 9차시 | 2024.03.22 | two-pointer | [두 수의 합](https://www.acmicpc.net/problem/3273) | [#9](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/38) |
 | 10차시 | 2024.03.28 | queue | [최대힙](https://www.acmicpc.net/problem/11279) | [#10](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/40) |
+| 11차시 | 2024.04.02 | two-pointer | [두 용액](https://www.acmicpc.net/problem/2470) | [#11](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/45) |
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diff --git a/rivkms/Two_pointer/2470.cpp b/rivkms/Two_pointer/2470.cpp
new file mode 100644
index 0000000..49ec015
--- /dev/null
+++ b/rivkms/Two_pointer/2470.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <vector>
+#include <algorithm>
+
+using namespace std;
+
+int main(){
+    int n;
+    cin >> n;
+    vector<int> vec(n,0);
+    for(int i = 0; i<n; i++){
+        cin >> vec[i];
+    }
+    sort(vec.begin(), vec.end());
+    vector<int> answer(2);
+    int p1 = 0, p2 = n-1;
+    int min = INT32_MAX;
+    while(true){
+        if(p1 >= p2){
+            break;
+        }
+        int sum = vec[p1]+vec[p2];
+        if(abs(sum) < min){
+            min = abs(sum);
+            answer[0] = vec[p1];
+            answer[1] = vec[p2];
+            if(sum == 0){
+                break;
+            }
+        }
+        if(sum < 0){
+            p1++;
+        }
+        else{
+            p2--;
+        }
+    }
+    cout << answer[0] << " " << answer[1];
+    return 0;
+}
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