More Problems

• Check if the sum of all elements in a 2D matrix is divisible by both the number of rows and columns.
• Check if the product of all elements in a 2D matrix is divisible by the sum of the number of rows and columns.
• Find the longest contiguous subarray where the sum of elements is a multiple of both 5 and 7.
• Find the longest contiguous subarray where the product of elements is a multiple of both 6 and 8.
• Check if the sum of elements at prime indices in an array is a multiple of the sum of their indices.
• Check if the product of elements at composite indices in an array is a multiple of the product of their indices.
• Find the number of subarrays where the sum of elements is greater than their digit sum.
• Find the number of subarrays where the product of elements is smaller than their digit product.