More Problems

• Find the number of subarrays whose sum is a Fibonacci number.
• Find the number of subarrays whose product is a prime number.
• Check if the sum of elements in the first k rows of a 2D matrix is divisible by a given number x.
• Check if the product of elements in the first k columns of a 2D matrix is divisible by a given number y.
• Find the number of subarrays where the sum of elements is a multiple of 7.
• Find the number of subarrays where the product of elements is a multiple of 9.
• Find the row in a 2D matrix where the sum of the first and last elements is the smallest.
• Find the column in a 2D matrix where the product of the first and last elements is the largest.