diff --git a/TangDou/LanQiaoBei/ZhongGaoJi/LanQiao15STEMA202401/3.cpp b/TangDou/LanQiaoBei/ZhongGaoJi/LanQiao15STEMA202401/3.cpp
index 8e163fb..3188f66 100644
--- a/TangDou/LanQiaoBei/ZhongGaoJi/LanQiao15STEMA202401/3.cpp
+++ b/TangDou/LanQiaoBei/ZhongGaoJi/LanQiao15STEMA202401/3.cpp
@@ -34,7 +34,7 @@ int main() {
     // 2、做一个二维矩阵存进去
     for (int i = 0; i < n; i++)     // 行
         for (int j = 0; j < m; j++) // 列
-            a[i][j] = s[(i)*m + j];
+            a[i][j] = s[i * m + j];
 
     // 3、从第一列开始，逐列从上下到输出矩阵中的字符
     for (int j = 0; j < m; j++)