diff --git a/2023205/main.cpp b/2023205/main.cpp
new file mode 100644
index 0000000..38446d1
--- /dev/null
+++ b/2023205/main.cpp
@@ -0,0 +1,36 @@
+#include <stdio.h>
+int nodes[65540] = {0};
+
+int main() {
+    int N, M;
+    scanf("%d %d", &N, &M);
+    for (int i = 0; i < N; i++) {
+        int total_edge, dest_node;
+        scanf("%d", &total_edge);
+        for (int j = 0; j < total_edge; j++) {
+            scanf("%d", &dest_node);
+            nodes[dest_node]++;
+        }
+    }
+    for (int i = 1; i < N; i++) {
+        if (nodes[i] == 0) {
+            for (int i = 0; i <= M; i++) {
+                printf("0\n");
+            }
+            return 0;
+        }
+    }
+
+    printf("1\n");
+    for (int i = 0; i < M; i++) {
+        int start, end;
+        scanf("%d %d", &start, &end);
+        if (end == 0 || nodes[end] > 1) {
+            printf("1\n");
+        }
+        else {
+            printf("0\n");
+        }
+    }
+    return 0;
+}
\ No newline at end of file