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index 4297128..9f70945 100644
--- a/TangDou/AcWing/BeiBao/423.md
+++ b/TangDou/AcWing/Bag/423.md
@@ -37,13 +37,16 @@ $1≤T≤1000$,$1≤M≤100$
 
 
 ### 二、题目解析
-注意一下$m$和$n$的录入顺序。
 
 **01背包模型**
 
-**状态表示$f(i,j)$—集合**： 考虑前 $i$ 个物品，且当前已使用体积为$ j$ 的方案
+**状态表示**
 
-**状态表示$f(i,j)$—属性**： 该方案的价值为最大值 $max$
+$f(i,j)$
+- **集合**
+考虑前 $i$ 个物品，且当前已使用体积为$ j$ 的方案
+- **属性** 
+该方案的价值为最大值 $max$
 
 **状态转移$f(i,j)$**： 
 
@@ -65,7 +68,6 @@ $$f(i,j)=\begin{equation}
 
 
 ### 三、二维朴素作法
-空间复杂度：$O(n×m)$
 时间复杂度：$O(n×m)$
 
 ```cpp {.line-numbers}
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diff --git a/TangDou/AcWing/BeiBao/【总结】脑图形式(一维)总结.md b/TangDou/AcWing/Bag/【总结】脑图形式(一维)总结.md
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rename to TangDou/AcWing/Bag/【总结】脑图形式(一维)总结.md
diff --git a/TangDou/AcWing/BeiBao/【总结】脑图形式(二维)总结.md b/TangDou/AcWing/Bag/【总结】脑图形式(二维)总结.md
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diff --git a/TangDou/AcWing/Bag/背包问题专题,md b/TangDou/AcWing/Bag/背包问题专题,md
new file mode 100644
index 0000000..9c22d11
--- /dev/null
+++ b/TangDou/AcWing/Bag/背包问题专题,md
@@ -0,0 +1,64 @@
+## 背包问题
+
+### 一、$01$背包
+**[$AcWing$ $2$. $01$背包问题](https://www.acwing.com/problem/content/2/)**
+
+**[$AcWing$ $423$. 采药](https://www.acwing.com/problem/content/425/)**
+
+**[$AcWing$ $1024$. 装箱问题](https://www.acwing.com/problem/content/1026/)**
+
+二维状态表示
+```cpp {.line-numbers}
+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 110;
+const int M = 1010;
+
+int n, m;
+int w[N], v[N];
+int f[N][M];
+
+int main() {
+    cin >> m >> n;
+
+    for (int i = 1; i <= n; i++) cin >> v[i] >> w[i];
+
+    for (int i = 1; i <= n; i++)
+        for (int j = 1; j <= m; j++) {
+            f[i][j] = f[i - 1][j]; // 不选
+            if (j >= v[i])
+                f[i][j] = max(f[i][j], f[i - 1][j - v[i]] + w[i]); // 选
+        }
+    printf("%d\n", f[n][m]);
+    return 0;
+}
+
+```
+
+一维状态表示
+```cpp {.line-numbers}
+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 1010;
+
+int n, m;
+int v[N], w[N];
+int f[N];
+
+int main() {
+    cin >> m >> n;
+    for (int i = 1; i <= n; i++) cin >> v[i] >> w[i];
+
+    // 01背包模板
+    for (int i = 1; i <= n; i++)
+        for (int j = m; j >= v[i]; j--)
+            f[j] = max(f[j], f[j - v[i]] + w[i]);
+
+    printf("%d\n", f[m]);
+    return 0;
+}
+```
+
+
diff --git a/TangDou/AcWing_TiGao/T1/LIS/1010.md b/TangDou/AcWing/LIS/1010.md
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