Suppose we have a number n. As we know, a bracket sequence is a string containing only characters "(" and ")". A valid bracket sequence is a bracket sequence which can be transformed into a correct arithmetic expression by inserting characters "1" and "+" between the original characters of the ... Read More

Suppose we have three numbers a, b and c. We want to make a closed fence in a shape of arbitrary non-degenerate simple quadrilateral. We already have three sides of length a, b and c. We have to find another side d.So, if the input is like a = 12; ... Read More

Suppose we have a number n. We need to find two integers l and r, such that l < r and l + (l + 1) + ... + (r - 1) + r = n.So, if the input is like n = 25, then the output will be l ... Read More

Suppose we have a number d. Consider there is an infinite number of square tiles and regular triangular tiles with sides length 1. We have to find in how many ways we can form regular dodecagon (12-sided polygon) with sides d using these tiles. If the answer is too large, ... Read More

Suppose we have a number R, represents the radius of a pond. We have to find the circumference of this pond.So, if the input is like R = 73, then the output will be 458.67252742410977361942StepsTo solve this, we will follow these steps −res := r * 2 * cos-inverse (-1) ... Read More

Suppose we have a string S with lowercase English letters. We must insert exactly one character 'a' in S. After inserting that if we can make S not a palindrome then return that string, otherwise return "impossible".So, if the input is like S = "bpapb", then the output will be ... Read More

Suppose we have a string S with N characters. S contains only three types of characters 'A', 'B' or 'C'. We also have another integer K. We have to print S after lowercasing the Kth character in it.So, if the input is like K = 2; S = "AABACC", then ... Read More

Suppose we have two numbers N and K. We want to distribute N crackers to K users. We have to find the minimum possible difference between the largest number of crackers received by a user and smallest number received by a user.So, if the input is like N = 7; ... Read More

Suppose we have two numbers K and X. Consider Amal has K, 500 rupee notes. We have to check whether the sums up to X rupees or not.So, if the input is like K = 2; X = 900, then the output will be True, because 2*500 = 1000 and ... Read More

Suppose we have two arrays A and B both with N elements. Consider there are N computers and N sockets. The coordinate of ith computer is A[i] and coordinate of ith socket is b[i]. These 2N coordinates are pair-wise distinct. We want to connect each computer with a socket by ... Read More