diff --git a/contest/src/main/java/com/github/contest/Execute.kt b/contest/src/main/java/com/github/contest/Execute.kt
index e5e65b3b..3990e68e 100644
--- a/contest/src/main/java/com/github/contest/Execute.kt
+++ b/contest/src/main/java/com/github/contest/Execute.kt
@@ -1,9 +1,7 @@
 package com.github.contest
 
 
-import com.github.contest.hashTable.countGoodAlternativeSolution
-import com.github.contest.hashTable.numEquivDominoPairsProdVariant
-import com.github.contest.hashTable.testing
+import com.github.contest.array.minSum
 import com.github.contest.math.numberOfPowerfulInt
 import com.github.contest.strings.fullJustify
 import com.github.contest.strings.subStrHash
@@ -16,15 +14,15 @@ import java.util.TreeMap
 
 fun main() {
 
-    numEquivDominoPairsProdVariant(
-        arrayOf(
-            intArrayOf(1, 2), intArrayOf(2, 1), intArrayOf(3, 4), intArrayOf(5, 6)
-        )
+    minSum(
+        intArrayOf(0, 0, 10, 10, 12, 0, 13, 6, 0, 2, 10),
+        intArrayOf(24, 5, 12, 22)
     ).also { println(it) }
 }
 
 fun countGoodData() {
-    countGoodAlternativeSolution(intArrayOf(3, 1, 4, 3, 2, 2, 4), 2).also { println(it) }
+
+
 }
 
 fun fullJustifyData() {
diff --git a/contest/src/main/java/com/github/contest/array/ArrayLeetcode.kt b/contest/src/main/java/com/github/contest/array/ArrayLeetcode.kt
index 7a62b585..24c100b4 100644
--- a/contest/src/main/java/com/github/contest/array/ArrayLeetcode.kt
+++ b/contest/src/main/java/com/github/contest/array/ArrayLeetcode.kt
@@ -295,3 +295,55 @@ fun merge(intervals: Array<IntArray>): Array<IntArray> {
     return res.toTypedArray()
 }
 
+/**
+ * 2918. Minimum Equal Sum of Two Arrays After Replacing Zeros
+ */
+
+fun minSum(nums1: IntArray, nums2: IntArray): Long {
+    val zerosOne = nums1.countLong { it == 0 }
+    val zerosTwo = nums2.countLong { it == 0 }
+    val sumOne = nums1.sumLong() + zerosOne
+    val sumTwo = nums2.sumLong() + zerosTwo
+
+    return when {
+        sumOne == sumTwo -> sumOne
+        sumOne < sumTwo -> if (zerosOne > 0) sumTwo else -1L
+        else -> if (zerosTwo > 0) sumOne else -1L
+    }
+}
+
+private fun IntArray.countLong(predicate: (Int) -> Boolean): Long {
+    var count = 0L
+    for (element in this) {
+        if (predicate(element)) count++
+    }
+    return count
+}
+
+private fun IntArray.sumLong(): Long {
+    var sum = 0L
+    for (element in this) sum += element
+    return sum
+}
+
+/**
+ * 1550. Three Consecutive Odds
+ */
+
+fun threeConsecutiveOdds(arr: IntArray): Boolean {
+    var consecutive = 3
+
+    for (num in arr) {
+        if (isOdd(num)) consecutive--
+        else consecutive = 3
+
+        if (consecutive == 0) return true
+    }
+
+    return false
+}
+
+fun isOdd(number: Int) = when {
+    number % 2 != 0 -> true
+    else -> false
+}
diff --git a/contest/src/main/java/com/github/contest/array/ArrayProdVariant.kt b/contest/src/main/java/com/github/contest/array/ArrayProdVariant.kt
index 7ee7363e..bba539c4 100644
--- a/contest/src/main/java/com/github/contest/array/ArrayProdVariant.kt
+++ b/contest/src/main/java/com/github/contest/array/ArrayProdVariant.kt
@@ -120,4 +120,32 @@ fun mergeProdVariantII(intervals: Array<IntArray>): Array<IntArray> =
             it[1] = maxOf(it[1], interval[1])
         } ?: merged.add(interval)
         merged
-    }.toTypedArray()
\ No newline at end of file
+    }.toTypedArray()
+
+/**
+ * 1550. Three Consecutive Odds
+ * Prod Variants
+ */
+
+fun threeConsecutiveOddsProdVariantI(arr: IntArray): Boolean =
+    arr.toList()
+        .windowed(3)
+        .filter {
+            val one = it[0]
+            val two = it[1]
+            val three = it[2]
+            isOdd(one) && isOdd(two) && isOdd(three)
+        }.isNotEmpty()
+
+fun threeConsecutiveOddsProdVariantII(arr: IntArray): Boolean =
+    arr.toList()
+        .windowed(3)
+        .any { isOdd(it.first()) && isOdd(it.middle()) && isOdd(it.last()) }
+
+private fun List<Int>.middle(): Int = this[this.size / 2]
+
+fun threeConsecutiveOddsProdVariantIII(arr: IntArray): Boolean =
+    arr.toList()
+        .windowed(3)
+        .any { window -> window.all { it % 2 != 0 } }
+
diff --git a/contest/src/main/java/com/github/contest/hashTable/HashTableLeetcode.kt b/contest/src/main/java/com/github/contest/hashTable/HashTableLeetcode.kt
index d587d756..98e76ed3 100644
--- a/contest/src/main/java/com/github/contest/hashTable/HashTableLeetcode.kt
+++ b/contest/src/main/java/com/github/contest/hashTable/HashTableLeetcode.kt
@@ -508,4 +508,24 @@ fun numEquivDominoPairs(dominoes: Array<IntArray>): Int {
     return count
 }
 
+/**
+ * 2062. Count Vowel Substrings of a String
+ */
+
+fun countVowelSubstrings(word: String): Int {
+    var count = 0
+    val vowels = setOf('a', 'e', 'i', 'o', 'u')
+
+    for (i in word.indices) {
+        val seen = mutableSetOf<Char>()
+        for (j in i until word.length) {
+            val char = word[j]
+            if (char !in vowels) break
+            seen.add(char)
+            if (seen.size == 5) count++
+        }
+    }
+
+    return count
+}
 
diff --git a/contest/src/main/java/com/github/contest/hashTable/HashTableProdVariant.kt b/contest/src/main/java/com/github/contest/hashTable/HashTableProdVariant.kt
index 15fe5742..a80d0961 100644
--- a/contest/src/main/java/com/github/contest/hashTable/HashTableProdVariant.kt
+++ b/contest/src/main/java/com/github/contest/hashTable/HashTableProdVariant.kt
@@ -7,15 +7,14 @@ package com.github.contest.hashTable
  */
 
 
-fun areAlmostEqualProdVariant(s1: String, s2: String): Boolean =
-    when {
-        s1 == s2 -> true
-        s1.length != s2.length -> false
-        else -> s1.zip(s2).withIndex().filter { it.value.first != it.value.second }.map { it.index }
-            .let { diff ->
-                diff.size == 2 && s1[diff[0]] == s2[diff[1]] && s1[diff[1]] == s2[diff[0]]
-            }
-    }
+fun areAlmostEqualProdVariant(s1: String, s2: String): Boolean = when {
+    s1 == s2 -> true
+    s1.length != s2.length -> false
+    else -> s1.zip(s2).withIndex().filter { it.value.first != it.value.second }.map { it.index }
+        .let { diff ->
+            diff.size == 2 && s1[diff[0]] == s2[diff[1]] && s1[diff[1]] == s2[diff[0]]
+        }
+}
 
 /**
  * 2965. Find Missing and Repeated Values
@@ -114,12 +113,44 @@ fun intToRomanProdVariant(num: Int): String {
  * 1128. Number of Equivalent Domino Pairs
  */
 
-fun numEquivDominoPairsProdVariant(dominoes: Array<IntArray>): Int = dominoes
-    .map { (a, b) -> if (a <= b) a to b else b to a }
-    .groupingBy { it }
-    .eachCount()
-    .values
-    .sumOf { count -> count * (count - 1) / 2 }
+fun numEquivDominoPairsProdVariant(dominoes: Array<IntArray>): Int =
+    dominoes.map { (a, b) -> if (a <= b) a to b else b to a }
+        .groupingBy { it }
+        .eachCount()
+        .values
+        .sumOf { count -> count * (count - 1) / 2 }
+
+/**
+ * 2062. Count Vowel Substrings of a String
+ * Prod Variant
+ */
+
+fun countVowelSubstringProdVariant(word: String): Int = word.indices.sumOf { i ->
+    val seen = mutableSetOf<Char>()
+    word.substring(i).takeWhile { it in "aeiou" }.count {
+        seen.add(it)
+        seen.size == 5
+    }
+}
+
+
+/**
+ * 2062. Count Vowel Substrings of a String
+ * Prod Variant III
+ */
+
+fun countVowelSubstringsProdVariantIII(word: String) = sequence {
+    word.forEachIndexed { i, _ ->
+        val seen = mutableSetOf<Char>()
+        word.asSequence().drop(i)
+            .takeWhile { it in "aeiou" }
+            .forEach { c ->
+                seen += c
+                if (seen.size == 5) yield(1)
+            }
+    }
+}.sum()
+
 
 
 
diff --git a/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowLeetcode.kt b/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowLeetcode.kt
index cc970657..eeb68294 100644
--- a/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowLeetcode.kt
+++ b/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowLeetcode.kt
@@ -1,5 +1,6 @@
 package com.github.contest.slidingWindow
 
+
 /**
  * 76. Minimum Window Substring
  */
@@ -237,3 +238,66 @@ private fun atMostK(nums: IntArray, k: Int): Int {
 
     return count
 }
+
+/**
+ * 2062. Count Vowel Substrings of a String
+ */
+
+fun countVowelSubstrings(word: String): Int {
+    if (word.length < 5) return 0
+
+    var count = 0
+    val k = 5
+    val vowels = "aeiou"
+
+    for (window in k..word.length) {
+        var left = 0
+        val freq = mutableMapOf<Char, Int>()
+
+        for (right in 0 until word.length) {
+            freq[word[right]] = freq.getOrDefault(word[right], 0) + 1
+
+            if (right - left == window - 1) {
+                var isValid = true
+
+                for ((key, _) in freq) {
+                    if (!isVowel(key)) {
+                        isValid = false
+                        break
+                    }
+                }
+
+                for (vowel in vowels) {
+                    if (!freq.contains(vowel)) {
+                        isValid = false
+                        break
+                    }
+                }
+
+                if (isValid) count++
+
+                freq[word[left]] = freq.getOrDefault(word[left], 0) - 1
+                if (freq[word[left]] == 0) freq.remove(word[left])
+                left++
+            }
+        }
+    }
+
+    return count
+}
+
+private fun isVowel(char: Char) = when {
+    char in "aeiou" -> true
+    else -> false
+}
+
+/**
+ * 3364. Minimum Positive Sum Subarray
+ */
+
+fun minimumSumSubarray(nums: List<Int>, l: Int, r: Int): Int {
+    val minSums = mutableListOf<Int>()
+    return TODO("Make this method")
+}
+
+
diff --git a/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowProdVariant.kt b/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowProdVariant.kt
index 5202631f..b4685c04 100644
--- a/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowProdVariant.kt
+++ b/contest/src/main/java/com/github/contest/slidingWindow/SlidingWindowProdVariant.kt
@@ -86,3 +86,13 @@ fun countSubArraysProdVariant(nums: IntArray): Int =
         (it.first() + it.last()).toDouble() == it[1].toDouble() / 2.0
     }
 
+/**
+ * 3364. Minimum Positive Sum Subarray
+ * Prod Variant
+ */
+
+fun minimumSumSubarrayProdVariant(nums: List<Int>, l: Int, r: Int): Int = buildList {
+    (l..r).forEach { window ->
+        nums.windowed(window).map { it.sum() }.filter { it > 0 }.forEach { add(it) }
+    }
+}.minOrNull() ?: -1