diff --git "a/2101040022/chapter_8/\345\210\244\346\226\255\344\272\214\345\210\206\345\233\276.cpp" "b/2101040022/chapter_8/\345\210\244\346\226\255\344\272\214\345\210\206\345\233\276.cpp"
new file mode 100644
index 0000000000000000000000000000000000000000..b0727627b858ef06a525aa8194e69bc267b6b9bb
--- /dev/null
+++ "b/2101040022/chapter_8/\345\210\244\346\226\255\344\272\214\345\210\206\345\233\276.cpp"
@@ -0,0 +1,30 @@
+bool dfs(int node, int c, int* color, int** graph, int* graphColSize) {
+    color[node] = c;
+    int cNei = (c == 1 ? 2 : 1);
+    for (int i = 0; i < graphColSize[node]; ++i) {
+        int neighbor = graph[node][i];
+        if (color[neighbor] == 0) {
+            if (!dfs(neighbor, cNei, color, graph, graphColSize)) {
+                return false;
+            }
+        } else if (color[neighbor] != cNei) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool isBipartite(int** graph, int graphSize, int* graphColSize) {
+    int* color = (int*)malloc(sizeof(int) * graphSize);
+    memset(color, 0, sizeof(int) * graphSize);
+    for (int i = 0; i < graphSize; ++i) {
+        if (color[i] == 0) {
+            if (!dfs(i, 1, color, graph, graphColSize)) {
+                free(color);
+                return false;
+            }
+        }
+    }
+    free(color);
+    return true;
+}
\ No newline at end of file