update sungkohan

storage/sungkohan/kt/completed/2025-div2-A.kt

@@ -0,0 +1,39 @@
+import java.io.StreamTokenizer
+
+fun rectanglePermCount(n: Int, table: Array<Array<Int>>): Int {
+    var cnt = 0
+    for (r1 in 0 until n) {
+        for (c1 in 0 until n) {
+            for (r2 in r1 until n) {
+                for (c2 in c1 until n) {
+                    val list: MutableList<Int> = mutableListOf()
+                    for (i in r1..r2) {
+                        for (j in c1..c2) {
+                            list.add(table[i][j])
+                        }
+                    }
+                    list.sort()
+                    if (list.withIndex().all { it.index + 1 == it.value }) {
+                        cnt++
+                    }
+                }
+            }
+        }
+    }
+    return cnt
+}
+
+fun main() = with(StreamTokenizer(System.`in`.bufferedReader())) {
+    nextToken()
+    val n = nval.toInt()
+
+    val table = Array(n) { Array(n) { 0 } }
+    for (i in 0 until n) {
+        for (j in 0 until n) {
+            nextToken()
+            table[i][j] = nval.toInt()
+        }
+    }
+
+    println(rectanglePermCount(n, table))
+}