leetcode

commit d4141c637fa4f99dd0b8487730cf5f52468d2ad6
parent 0429b82834dc197ec54949683a732805990c9c98
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date:   Tue, 13 Jun 2023 19:46:54 +0200

Daily Problem

Diffstat:
A
Problems/2352.cpp
 | 
15
+++++++++++++++
M
README.md
 | 
1
+

2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/Problems/2352.cpp b/Problems/2352.cpp
@@ -0,0 +1,15 @@
+class Solution {
+public:
+  int equalPairs(vector<vector<int>> &grid) {
+    int n = grid.size(), res = 0;
+    map<vector<int>, int> m;
+    for (const auto &vec : grid) m[vec]++;
+
+    for (int i = 0; i < n; i++)
+      for (int j = 0; j < n; j++)
+        if (i < j) swap(grid[i][j], grid[j][i]);
+
+    for (const auto &vec : grid) res += m[vec];
+    return res;
+  }
+};
diff --git a/README.md b/README.md
@@ -546,6 +546,7 @@ for solving problems.
 |  2336  |   Medium   | [Smallest Number in Infinite Set](Problems/2336.cpp)                                             |
 |  2343  |   Medium   | [Query Kth Smallest Trimmed Number](Problems/2343.cpp)                                           |
 |  2348  |   Medium   | [Number of Zero-Filled Subarrays](Problems/2348.cpp)                                             |
+|  2352  |   Medium   | [Equal Row and Column Pairs](Problems/2352.cpp)                                                             |
 |  2359  |   Medium   | [Find Closest Node to Given Two Nodes](Problems/2359.cpp)                                        |
 |  2360  |    Hard    | [Longest Cycle in a Graph](Problems/2360.cpp)                                                    |
 |  2368  |   Medium   | [Reachable Nodes With Restrictions](Problems/2368.cpp)                                           |