leetcode

commit 378592e743fe6936190a75b51a8da1d3df7d087a
parent 80048f468eba5a4d8a1b3ca1d82731fe5c012999
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date:   Sat, 10 Aug 2024 12:59:14 +0200

1 Random Problem

Diffstat:
A
Problems/3239.cpp
 | 
21
+++++++++++++++++++++
M
README.md
 | 
1
+

2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/Problems/3239.cpp b/Problems/3239.cpp
@@ -0,0 +1,21 @@
+class Solution {
+  public:
+    int minFlips(const vector<vector<int>> &grid) const {
+        const int n = size(grid), m = size(grid[0]);
+        int row = 0, col = 0;
+
+        for (int i = 0; i < n; i++) {
+            int a = 0, b = m - 1;
+            while (a < b)
+                row += grid[i][a++] != grid[i][b--];
+        }
+
+        for (int j = 0; j < m; j++) {
+            int a = 0, b = n - 1;
+            while (a < b)
+                col += grid[a++][j] != grid[b--][j];
+        }
+
+        return min(row, col);
+    }
+};
diff --git a/README.md b/README.md
@@ -1314,3 +1314,4 @@ for solving problems.
 |  3211  |   Medium   | [Generate Binary Strings Without Adjacent Zeros](Problems/3211.cpp)                                |
 |  3212  |   Medium   | [Count Submatrices With Equal Frequency of X and Y](Problems/3212.cpp)                             |
 |  3228  |   Medium   | [Maximum Number of Operations to Move Ones to the End](Problems/3228.cpp)                          |
+|  3239  |   Medium   | [Minimum Number of Flips to Make Binary Grid Palindromic I](Problems/3239.cpp)                     |