diff --git a/src/BaekJoon/SongSiWoon/1436/main.cpp b/src/BaekJoon/SongSiWoon/1436/main.cpp
new file mode 100644
index 0000000..5b88d26
--- /dev/null
+++ b/src/BaekJoon/SongSiWoon/1436/main.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+int main(){
+    int N;
+    cin >> N;
+    int start = 665;
+    while (N > 0) {
+        start++;
+        if(to_string(start).find("666")!=string::npos) {
+            N--;
+        }
+    }
+    printf("%d", start);
+}