From efce1d2e0fd15c90fc4408aeeea6a44b21a3d4d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Khoa=20Hu=E1=BB=B3nh=20=28Daniel=29?= <khoa0319@gmail.com>
Date: Fri, 26 Apr 2024 23:16:14 +0700
Subject: [PATCH] Create main.go

---
 solution/1289/main.go | 45 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 solution/1289/main.go

diff --git a/solution/1289/main.go b/solution/1289/main.go
new file mode 100644
index 0000000..13de93c
--- /dev/null
+++ b/solution/1289/main.go
@@ -0,0 +1,45 @@
+package main
+
+package main
+
+import (
+	"math"
+)
+
+type Triplet struct {
+	minSum       int
+	secondMinSum int
+	minSumIndex  int
+}
+
+func minFallingPathSum(grid [][]int) int {
+	return minFallingPathSumHelper(0, grid).minSum
+}
+
+func minFallingPathSumHelper(row int, grid [][]int) Triplet {
+	if row == len(grid) {
+		return Triplet{0, 0, 0}
+	}
+
+	nextRowTriplet := minFallingPathSumHelper(row+1, grid)
+	currentTriplet := Triplet{math.MaxInt32, math.MaxInt32, -1}
+
+	for col := 0; col < len(grid[0]); col++ {
+		var value int
+		if col != nextRowTriplet.minSumIndex {
+			value = grid[row][col] + nextRowTriplet.minSum
+		} else {
+			value = grid[row][col] + nextRowTriplet.secondMinSum
+		}
+
+		if value <= currentTriplet.minSum {
+			currentTriplet.secondMinSum = currentTriplet.minSum
+			currentTriplet.minSum = value
+			currentTriplet.minSumIndex = col
+		} else if value < currentTriplet.secondMinSum {
+			currentTriplet.secondMinSum = value
+		}
+	}
+
+	return currentTriplet
+}